Does cold plunging help recovery and mood?
Short answer
Eases soreness a little; mood unproven.
Pooled trials show cold water after hard exercise eases muscle soreness, mainly within 24 hours. Strength recovery results are mixed, mood benefits are not shown, and regular use after weight training blunted muscle growth.
This page says what the research shows. It does not say whether you should take cold plunges.
Where the evidence stands
Each dot is one on-topic paper. Steps near the top answer the question more directly. Select a dot to see the study.
↑ Stronger evidence
-
Trials in people: muscle recovery and mood
Trials that measured muscle recovery, mood and immune health directly.
8 -
Trials in people: other measures
Trials that measured other health or performance measures.
8 -
Trials in people: lab tests or safety
Trials that measured lab tests, side effects or safety.
3 -
Population studies
Studies that followed or surveyed groups of people. They show links, not causes.
3 -
Blood levels and genes
Studies that link blood levels or genes to health.
0None among the papers we read.
↓ Weaker evidence
- Points to benefit
- Mixed
- No difference
- No direction
- Points to harm
Not on the ladder: 8 reviews of many studies (shown below). Counts are papers, not people. Some studies appear in more than one paper.
See every studyWhat we found
- A review of 32 trials with 1098 people found cold water eased muscle soreness in the 24 hours after exercise, with no clear effect after that. Wang 2021
- In 21 men lifting weights for 12 weeks, strength and muscle mass grew more with active recovery than with 10 minutes of cold water after each session. Roberts 2015
- In a trial of 3018 adults, cold showers cut days off sick from work by 29%, but did not reduce the number of days people were ill. Buijze 2016
- A 2026 review of thirteen studies (4105 adults) says evidence does not show cold water improves mood or stress; a review of eleven trials found no mood benefit. Ngandeu Schepanski 2026, Cain 2025
What the research says
Soreness eases, mostly in the first day
Five reviews pooled trials of cold water after hard exercise. All found less muscle soreness, most clearly within 24 hours. One review of fifty-two studies, comparing cold water with rest, also found a better sense of recovery 24 h after high-intensity exercise.
Single trials were less consistent. Cold water eased soreness in older adults, in women after hamstring exercise, and in CrossFit athletes compared with massage. It gave no soreness benefit after an Ironman race and did no better than a warm bath after leg exercise.
Studies: Wang 2021, Moore 2022, Moore 2023, Choo 2022, Xiao 2023, Naderi 2021, Huang 2025, Pereira 2025, Stearns 2018, Benoît 2024
Strength and performance recovery: mixed results
Reviews disagree on strength. A review of sixty-eight studies found better strength and jump height 24 h after cold water, but worse sprint and jump in the first hours. A review of fifty-two studies, comparing with rest, found better power but no effect on strength.
Most small trials found no recovery benefit. Strength, jump height, power and next-day performance were similar after cold water and rest in ankle, interval and soccer-style tests. In rugby players, time to exhaustion the next day did not differ, though change from baseline favored cold water.
Studies: Choo 2022, Moore 2022, Xiao 2023, Richards 2025, Malta 2023, Farkhari Babak 2021, Dobashi 2026
Regular use after weight training blunted muscle gains
Two trials tested cold water after every strength session for 7 to 12 weeks. In one, strength and muscle mass grew more with active recovery than with cold water. In the other, strength gains were similar, but muscle fibres grew less with cold water.
In competitive cyclists, cold water four times a week through weeks of hard training did not clearly change most performance tests, and sprint power was likely higher. The authors found no support for the idea that it harms performance.
Studies: Roberts 2015, Fyfe 2019, Halson 2014
Mood: no clear benefit shown
A 2026 review of thirteen studies with 4105 adults found results leaning toward less depression and stress, but ranges were wide and shrank when only controlled studies were used. The authors say the evidence does not show cold water improves mood. A review of eleven trials found no mood change.
In a trial of 141 stressed women, cold showers with fast breathing cut depression no more than slow breathing with warm showers, meditation or interval exercise after 3 weeks. An online survey linked regular cold dips to better mental health, but surveys show links, not causes.
Studies: Ngandeu Schepanski 2026, Cain 2025, Epel 2025, Czarnecki 2024
Immune health: fewer sick days, not fewer illnesses
In a trial of 3018 adults, ending showers with 30, 60 or 90 seconds of cold cut self-reported sickness absence from work by 29% compared with a control group. The number of days people were ill did not differ, and no serious side effects linked to cold showers were reported.
Other immune evidence is weaker. A review of eleven trials found no clear change in immune tests, and inflammation rose right after cold water. In a trial of sixty adults, antibody levels rose over 90 days of daily cold showers, but only blood markers were measured.
Studies: Buijze 2016, Cain 2025, El-Ansary 2024
What reviews of many studies found
Reviews pool or sum up earlier studies. They are not on the ladder, because they repeat studies already counted there.
Pooled review (meta-analysis) · Choo 2022
Pooled sixty-eight studies of cold water after exercise. It helped endurance at 1 h but hurt sprint and jump early; later it helped strength, jump and soreness. Effects depended on the type of prior exercise.
Pooled review (meta-analysis) · Moore 2022
Pooled fifty-two studies comparing cold water with rest after one hard exercise bout. After high-intensity exercise it eased soreness, lowered creatine kinase and improved power and felt recovery at 24 h, but not strength.
Pooled review (meta-analysis) · Ngandeu Schepanski 2026
Pooled thirteen studies with 4105 adults on cold showers, cold baths and winter swimming. Results leaned toward better mood and less stress, but most studies had high risk of bias. Authors concluded the evidence does not establish a benefit.
Pooled review (meta-analysis) · Cain 2025
Pooled eleven trials with 3177 healthy adults. Stress fell 12 hours after cold water but not at other times. Inflammation rose right after, immune tests showed no clear change, and sleep and quality of life improved but mood did not.
How the research grew
The papers we read span 2014 to 2026. 11 of the 30 on-topic papers came out in 2024 to 2026. The earliest trial in people here is from 2014.
- 2014
- 2015
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
Each dot is one on-topic paper, colored by what it found. Rings mark key papers:
- 2015. Cold water after lifting blunted strength and muscle gains. Roberts 2015
- 2016. Largest trial: 3018 adults, cold showers, sick days. Buijze 2016
- 2017. First human muscle data on cold water and inflammation. Peake 2017
- 2022. Largest review: sixty-eight studies of performance recovery. Choo 2022
- 2026. Newest review: mood benefit not established. Ngandeu Schepanski 2026
Who was studied
Who took part, and how many. The largest trial here had 3,018 people; the largest population study had 28.
- Trials in people
- Population, blood and gene studies
- People in the study, log scale1101001,00010,000
- Points to benefit
- Mixed
- No difference
- No direction
- Points to harm
Bars use a log scale: each step is ten times more people. Reviews, animal studies and papers with no count in the abstract are not shown.
Who funds this research
None of the 19 trial papers has a company stake. Six declare no conflicts; 13 have no conflict statement in PubMed. One review author holds a football club grant to study cold water. Stakes did not change the confidence.
- No disclosure in PubMed 13
- No stake declared 6
- Roberts 2015No disclosure in PubMed
- Peake 2017No disclosure in PubMed
- Benoît 2024No disclosure in PubMed
- Epel 2025No disclosure in PubMed
- Malta 2023No disclosure in PubMed
- Farkhari Babak 2021No disclosure in PubMed
- Naderi 2021No disclosure in PubMed
- Egaña 2019No disclosure in PubMed
- Halson 2014No disclosure in PubMed
- Stearns 2018No disclosure in PubMed
- Dobashi 2026No disclosure in PubMed
- Yoshimura 2022No disclosure in PubMed
- Fyfe 2019No disclosure in PubMed
- Buijze 2016No stake declared
- Huang 2025No stake declared
- El-Ansary 2024No stake declared
- Rose 2023No stake declared
- Richards 2025No stake declared
- Pereira 2025No stake declared
Funding rule. A stake is always shown. Confidence is lowered only when every supporting study comes from a party with a stake. "No disclosure in PubMed" means the PubMed record has no conflict-of-interest statement. It does not mean there is no conflict.
All 30 on-topic papers
Each paper shows what it tested, what it found, and who has a stake. Every paper also has its own page that explains how much it counts and how it fits. See every study as a list.
-
Randomized trial · measured the question itselfDobashi et al., 2026The Journal of sports medicine and physical fitness · PubMed
Effects of cold-water immersion after rugby-specific training on endurance performance.
11 people · 11 male college rugby players
Tested8 minutes in 15°C water after a 180-minute rugby training session vs 8 minutes seated rest; cycling test 24 h later
Time to exhaustion did not differ (485±72 vs. 518±77 s, P=0.107). Change from baseline was greater with cold water (both P<0.05). Placebo effect could not be ruled out.
No differenceNo disclosure in PubMedAbstract onlyNo disclosure in PubMed.
-
Randomized trial · measured the question itselfEpel et al., 2025Annals of behavioral medicine : a publication of the Society of Behavioral Medicine · PubMed
A randomized controlled pilot trial of low and high arousal resilience interventions for depressive symptoms.
141 people · 141 women with high stress
Tested3 weeks of fast breathing with cold showers (Wim Hof Method), vs warm showers with slow breathing, mindfulness, or hard interval exercise
All four groups had less depression (15.93% reduction) and stress (9.70% reduction) with no group differences. In a later look at those who stuck with it, the cold shower group kept lower depression at 3 months (r = .17).
No differenceNo disclosure in PubMedAbstract onlyNo disclosure in PubMed; funded by three charitable foundations.
-
Randomized trial · measured the question itselfRichards et al., 2025Scandinavian journal of medicine & science in sports · PubMed
Cold Water Immersion Does Not Enhance Recovery and Performance After High-Intensity Interval Dorsiflexion Exercise.
12 people · 12 young active people (10 men, 2 women)
Tested10 minutes in 10°C water vs 10 minutes of rest at room temperature after hard ankle exercise, each person did both
Muscle strength stayed lower for up to 3 h in both conditions. A repeat workout 24 h later was similar. 10 minutes of cold water at 10°C did not improve recovery or next-day performance.
No differenceNo stake declaredAbstract onlyNo competing interests declared.
-
Effectiveness of cold-water immersion vs. massage in reducing delayed-onset muscle soreness and enhancing recovery following CrossFit® Murph Workout: Randomized rial.
30 people · 30 CrossFit athletes after a hard workout
TestedCold water immersion vs massage after the Murph workout
Authors report cold water cut pain at rest and during exercise, with no pain reported 48 hours after. No numbers given in the abstract.
Points to benefitNo stake declaredAbstract onlyNo competing interests declared.
-
Randomized trial · measured the question itselfBenoît et al., 2024Medicine and science in sports and exercise · PubMed
Hot But Not Cold Water Immersion Mitigates the Decline in Rate of Force Development Following Exercise-Induced Muscle Damage.
30 people · 30 active men after muscle-damaging leg exercise
TestedCold water (11°C), hot water (41°C) or a warm bath (36°C) right after exercise; strength checked at 24 and 48 h
At 48 h, quick force and soreness were back to baseline only after hot water (41°C), not cold water (11°C). Peak strength was back to baseline after both (cold: -8.3% ± 6.8%, P = 0.079).
No differenceNo disclosure in PubMedAbstract onlyNo disclosure in PubMed.
-
The Effect of Cold Showering on Health and Work: A Randomized Controlled Trial.
3,018 people · 3018 adults aged 18 to 65 with no serious illness, new to cold showers
TestedHot-to-cold shower ending with 30, 60 or 90 seconds of cold for 30 days, then cold at own choice for 60 days, vs normal showers
Sickness absence from work fell 29% with cold showers (incident rate ratio: 0.71, P = 0.003). Number of illness days did not differ. No serious side effects related to cold showers.
MixedNo stake declaredAbstract onlyOne author worked for insurer Achmea; no products to declare.
-
Randomized trial · measured the question itselfRoberts et al., 2015The Journal of physiology · PubMed
Post-exercise cold water immersion attenuates acute anabolic signalling and long-term adaptations in muscle to strength training.
21 people · 21 physically active men doing 12 weeks of strength training
Tested10 minutes of cold water immersion after each training session, twice a week for 12 weeks, vs active recovery
Strength and muscle mass grew more with active recovery than with cold water (P < 0.05). Type II muscle fibre size rose 17% with active recovery but not with cold water.
Points to harmNo disclosure in PubMedAbstract onlyNo disclosure in PubMed.
-
Randomized trial · measured the question itselfHalson et al., 2014Medicine and science in sports and exercise · PubMed
Does hydrotherapy help or hinder adaptation to training in competitive cyclists?
21 people · 34 male competitive cyclists randomized; 21 finished
Tested15 minutes in 15°C water four times a week during about 5 weeks of training, vs resting
Overall 4-minute power change was unclear (2.7% ± 5.7%). Sprint power was likely higher with cold water (4.4% ± 4.2%). The 10-minute time trial was unclear (-0.4% ± 4.3%).
No differenceNo disclosure in PubMedAbstract onlyNo disclosure in PubMed.
-
Randomized trial · other health measuresHuang et al., 2025European journal of sport science · PubMed
Effect of cold-water immersion treatment on recovery from exercise-induced muscle damage in the hamstring.
18 people · 18 healthy adult women after hard hamstring exercise
Tested14 minutes in 14°C water, five times over 5 days (1, 25, 49, 73 and 97 h after exercise), vs sitting at rest
Recovery of strength, soreness, leg-raise range and blood myoglobin was greater with cold water than rest. Soreness fell by 15.4 ± 1.5 mm on day two (p < 0.000).
Points to benefitNo stake declaredAbstract onlyNo competing interests declared.
-
Randomized trial · other health measuresMalta et al., 2023European journal of applied physiology · PubMed
Repeated cold-water immersion improves autonomic cardiac modulation following five sessions of high-intensity interval exercise.
21 people · 21 active adults doing hard interval workouts
Tested11 minutes in 11°C water after each of five workouts over two weeks, vs resting
Heart rate variability was higher with cold water (group-effect P = 0.037). Jump height, workout effort and muscle damage blood markers did not differ (P > 0.05).
No differenceNo disclosure in PubMedAbstract onlyNo disclosure in PubMed; funded by Brazilian public agencies.
-
Randomized trial · other health measuresYoshimura et al., 2022Research in sports medicine (Print) · PubMed
Effects of artificial CO2-rich cold-water immersion on repeated-cycling work efficiency.
15 people · 15 people doing hard cycling tests
Tested20 minutes in 20°C water with extra carbon dioxide, or plain 20°C water, or rest, between two cycling tests
Cycling efficiency and sprint power fell from first to second test in every condition. Blood lactate was lower with CO2 water than rest, but not than plain cold water.
No differenceNo disclosure in PubMedAbstract onlyNo disclosure in PubMed.
-
Experience of cold-water immersion on recovery efficiency after soccer match.
20 people · 20 young men new to cold water, doing a simulated soccer test
Tested15 minutes in 15°C water after exercise, repeated over 4 weeks, vs passive recovery
Cold water had no effect on blood AST and LDH, or on power output and sprint decline (P> 0.05).
No differenceNo disclosure in PubMedAbstract onlyNo disclosure in PubMed.
-
Randomized trial · other health measuresNaderi et al., 2021Scandinavian journal of medicine & science in sports · PubMed
Massage enhances recovery following exercise-induced muscle damage in older adults.
78 people · 78 older men and women after hard calf exercise
Tested15 minutes in 15 ± 1°C water, right after exercise and at 24, 48 and 72 h, vs massage vs rest
Cold water eased muscle pain (P ≤ .05) but did not reduce the loss of muscle strength, joint sense, balance or fear of falling. Massage helped on all of these.
MixedNo disclosure in PubMedAbstract onlyNo disclosure in PubMed.
-
Randomized trial · other health measuresEgaña et al., 2019Journal of science and medicine in sport · PubMed
A 2.5 min cold water immersion improves prolonged intermittent sprint performance.
10 people · 10 male team-sport players
Tested5 minutes or 2.5 minutes in 8°C water during a 15-minute break between two 40-minute cycling sprint sets, vs passive rest
After rest, work and peak power fell in the second half (TW: 5.04 ± 1.11 kJ vs 5.66 ± 1.02 kJ). After cold water they did not fall.
Points to benefitNo disclosure in PubMedAbstract onlyNo disclosure in PubMed.
-
Trial, not randomized · other health measuresFyfe et al., 2019Journal of applied physiology (Bethesda, Md. : 1985) · PubMed
Cold water immersion attenuates anabolic signaling and skeletal muscle fiber hypertrophy, but not strength gain, following whole-body resistance training.
16 people · 16 young men doing 7 weeks of weight training
Tested15 minutes in 10°C water after each session, 3 days a week for 7 weeks, vs 15 minutes of rest at 23°C
Leg press strength gains were similar in both groups. Growth of type II muscle fibres was smaller with cold water (-1,959 ± 1,675 µM2). Muscle growth signals were blunted.
Points to harmNo disclosure in PubMedAbstract onlyNo disclosure in PubMed.
-
Randomized trial · other health measuresStearns et al., 2018Journal of science and medicine in sport · PubMed
Influence of cold-water immersion on recovery of elite triathletes following the ironman world championship.
33 people · 33 triathletes after the Ironman World Championship
Tested10 minutes in 10°C water right after the race vs no treatment
No group difference in soreness or in blood markers of muscle damage and inflammation up to 40 hours after the race. One cold bath gave no recovery benefit within 40 h.
No differenceNo disclosure in PubMedAbstract onlyNo disclosure in PubMed.
-
Regular cold shower exposure modulates humoral and cell-mediated immunity in healthy individuals.
60 people · 60 healthy Egyptian adults
TestedA cold shower or a hot shower every day for 90 days
Antibody levels rose in the cold shower group, and IL-2 and IL-4 were raised at 90 days. IgM fell in the hot shower group at 60 and 90 days. IFN-γ and TNF-α did not differ between groups.
Points to benefitNo stake declaredAbstract onlyNo competing interests declared.
-
Randomized trial · lab tests or safetyRose et al., 2023European journal of applied physiology · PubMed
Partial body cryotherapy exposure drives acute redistribution of circulating lymphocytes: preliminary findings.
26 people · 26 men
Tested3 minutes in 9°C water, or in a very cold chamber (-110 to -140°C), vs 3 minutes at 24°C
CD8 T cells rose after the treatments. The cold chamber raised them more than 3 min in 9 °C water or the 24 °C control. The abstract reports no separate cold water benefit.
No differenceNo stake declaredAbstract onlyNo competing interests declared.
-
The effects of cold water immersion and active recovery on inflammation and cell stress responses in human skeletal muscle after resistance exercise.
9 people · 9 active men after leg strength exercise
Tested10 minutes in 10°C water after exercise vs 10 minutes of easy cycling, on separate days
Muscle inflammation and cell stress signals did not differ between cold water and easy cycling at 2, 24 and 48 hours after exercise.
No differenceNo disclosure in PubMedAbstract onlyNo disclosure in PubMed.
-
Population study: cases vs controlsCzarnecki et al., 2024International journal of circumpolar health · PubMed
Combined cold-water immersion and breathwork may be associated with improved mental health and reduction in the duration of upper respiratory tract infection - a case-control study.
adults answering an online survey; 77 people who did cold water plus breathwork, matched to cold-water-only people and people with neither
TestedRegular cold-water immersion alone or with breathwork, vs neither, compared by questionnaire
The cold-water-only group reported better mental health and shorter colds than the control group. The cold plus breathwork group did better again. Group sizes beyond 77 are not given.
Points to benefitNo stake declaredAbstract onlyNo competing interests declared.
-
Population study: followed a groupPetraskova Touskova et al., 2022The Journal of international medical research · PubMed
A novel Wim Hof psychophysiological training program to reduce stress responses during an Antarctic expedition.
13 people · 13 healthy people on an Antarctic expedition (6 trained, 7 not)
Tested8 weeks of Wim Hof training (breathing, cold exposure and meditation) vs no training
Depression scores fell with the training. Cortisol fell a little, but the drop was not clear.
Points to benefitNo stake declaredAbstract onlyNo competing interests declared.
-
Cold Water Immersion as a Strategy for Muscle Recovery in Professional Basketball Players During the Competitive Season.
28 people · 28 professional male basketball players across one season
TestedCold water after every match and before-match training, for a full season (12 players), vs no cold water (16 players)
Muscle blood markers except myoglobin were higher in the cold water group (P < .05). Strength differed at season end (P < .001). Effort ratings fell over the season in the cold water group.
MixedNo disclosure in PubMedAbstract onlyNo disclosure in PubMed.
-
Cold-water exposure and psychological outcomes in adults: a systematic review and meta-analysis.
13 studies, 4,105 people · adults in 13 studies of cold showers, cold baths or winter swimming
TestedCold showers, cold water immersion or winter swimming, compared with no cold or before and after
Pooled results leaned toward less depression and stress and better mood, but ranges were wide and shrank in controlled-only analyses. Little sign of benefit for anxiety. Authors say evidence does not show cold water improves mood.
MixedNo stake declaredAbstract onlyNo competing interests declared.
-
Effects of cold-water immersion on health and wellbeing: A systematic review and meta-analysis.
11 studies, 3,177 people · healthy adults in 11 randomized trials
TestedCold baths or showers at 7 to 15°C, lasting 30 seconds to 2 hours, compared with before exposure or no cold
Stress fell 12 hours after cold water (SMD: -1.00) but not at other times. Inflammation rose right after (SMD: 1.03) and 1 hour later (SMD: 1.26). Immune tests showed no clear effect. Sleep and quality of life improved; mood did not.
MixedNo stake declaredAbstract onlyNo competing interests declared.
-
The effects of hydrotherapy and cryotherapy on recovery from acute post-exercise induced muscle damage-a network meta-analysis.
57 studies, 1,220 people · healthy people after exercise that damages muscle
TestedCold water immersion, contrast water, warm water and air cryotherapy, compared with each other
Contrast water ranked best for creatine kinase (SUCRA: 79.9%). Cryotherapy ranked best for soreness (88.3%) and jump ability (83.7%). Authors recommend cold water immersion and cryotherapy.
Points to benefitNo stake declaredAbstract onlyNo competing interests declared.
-
Effects of cold water immersion after exercise on fatigue recovery and exercise performance--meta analysis.
20 studies · people doing high-intensity exercise, in 20 studies
TestedCold water immersion after exercise compared with no cold water
Cold water lowered muscle soreness and effort ratings right after exercise. Jump height was lower at 0 h. Creatine kinase was lower at 24 h. No change in C-reactive protein or IL-6 over 48 h.
MixedNo stake declaredAbstract onlyNo competing interests declared.
-
Effects of Cold-Water Immersion Compared with Other Recovery Modalities on Athletic Performance Following Acute Strenuous Exercise in Physically Active Participants: A Systematic Review, Meta-Analysis, and Meta-Regression.
28 studies · active people and athletes after hard exercise
TestedCold water immersion compared with other recovery methods such as active recovery, warm water and contrast water
Cold water was better than other methods for muscle soreness and similar for power and flexibility. Air cryotherapy beat it for strength. Water temperature and time rarely changed the effect.
Points to benefitNo disclosure in PubMedAbstract onlyNo disclosure in PubMed.
-
The effect of cold water immersion on the recovery of physical performance revisited: A systematic review with meta-analysis.
68 studies · active people and athletes after exercise
TestedCold water immersion after exercise, checked at times from under 1 hour to 96 hours or more
Cold water helped endurance at 1 h (p = 0.01) but hurt sprint (p = 0.03) and jump (p = 0.04) early. Later it helped strength (p < 0.01, 24 h), jump at 24 h and 96 h, and soreness (p < 0.01-0.02).
MixedNo disclosure in PubMedAbstract onlyNo disclosure in PubMed.
-
Impact of Cold-Water Immersion Compared with Passive Recovery Following a Single Bout of Strenuous Exercise on Athletic Performance in Physically Active Participants: A Systematic Review with Meta-analysis and Meta-regression.
52 studies · active people and athletes after one hard exercise bout
TestedCold water immersion compared with rest after hard exercise
After high-intensity exercise, cold water improved muscle soreness (SMD - 0.89) and felt recovery (SMD 0.66) at 24 h. Power also improved. No effect on strength. Shorter time and colder water linked to bigger effects on creatine kinase.
Points to benefitNo stake declaredAbstract onlyOne author has a Norwood Football Club grant to study cold water; the club had no role here.
-
Pooled review (meta-analysis)Wang et al., 2021Physical therapy in sport : official journal of the Association of Chartered Physiotherapists in Sports Medicine · PubMed
Heat and cold therapy reduce pain in patients with delayed onset muscle soreness: A systematic review and meta-analysis of 32 randomized controlled trials.
32 studies, 1,098 people · people with muscle soreness after exercise, in 32 trials
TestedCold therapy (including cold water immersion) or heat therapy within 1 hour after exercise
Cold within 1 h of exercise cut soreness within 24 h (SMD -0.57). Cold water immersion alone: SMD -0.48. No clear effect after 24 h. Heat also cut soreness, with no clear difference from cold.
Points to benefitNo stake declaredAbstract onlyNo competing interests declared.
12 papers we read and set aside as off topic
- Afonso et al., 2021. The Effectiveness of Post-exercise Stretching in Short-Term and Delayed Recovery of Strength, Range of Motion and Delayed Onset Muscle Soreness: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. (pooled review (meta-analysis))
- Cunha et al., 2023. The Impact of Sleep Interventions on Athletic Performance: A Systematic Review. (systematic review)
- Karos et al., 2025. The effect of online social support on experimental pain. (randomized trial)
- Liu et al., 2019. Pharmacokinetic analysis of plasma bicyclol by liquid chromatography-tandem mass spectrometry. (other)
- Douzi et al., 2019. 3-min whole body cryotherapy/cryostimulation after training in the evening improves sleep quality in physically active men. (randomized trial)
- Chiu et al., 2024. Alternating Hot-Cold Water Immersion Facilitates Motor Function Recovery in the Paretic Upper Limb After Stroke: A Pilot Randomized Controlled Trial. (randomized trial)
- Ordille et al., 2025. Optimizing Chronic Pain Treatment: A Summary of Infrequently Investigated Therapeutic Interventions for Modulating Pain. (opinion or narrative review)
- Suzuki et al., 2018. A case-control questionnaire survey of decompression sickness risk in Okinawa divers. (population study: cases vs controls)
- Zhang et al., 2024. Hybrid Photoacoustic Ultrasound Imaging System for Cold-Induced Vasoconstriction and Vasodilation Monitoring. (other)
- Essers et al., 2024. Ambient air temperature exposure and foetal size and growth in three European birth cohorts. (population study: followed a group)
- Schuhfried et al., 2000. Thermographic parameters in the diagnosis of secondary Raynaud's phenomenon. (population study: one-time survey)
- Hadala et al., 2009. Different strategies for sports injury prevention in an America's Cup yachting crew. (population study: followed a group)
Words on this page
- SMD (standardized mean difference)
- A way to compare results measured on different scales. About 0.2 is a small effect, 0.5 medium, and 0.8 large.
- p-value (p =)
- How likely a result this large would be by chance if there were no real effect. Below 0.05 is usually called a clear result.
- Placebo
- A dummy pill or fake treatment, so people do not know which group they are in.
- Pooled review (meta-analysis)
- A study that combines the results of many earlier studies to get one overall answer.
- Marker
- A lab or scan result that stands in for a health outcome. A better marker does not always mean better health.
How the short answer is set
Fixed rules turn the studies into the short answer, so the same studies always give the same answer. The rules start from GRADE, a standard system for rating evidence, in plain language.
| Confidence | What it means |
|---|---|
| High | We are confident the answer is right. |
| Moderate | The answer is probably right, but it could change. |
| Low (this page) | The answer may well change. |
| Very low | Any answer is very uncertain. |
| Not tested in people | Only cell or animal studies exist. |
Why low here
- Many trials measured soreness and strength directly, but most were small.
- Reviews find less soreness, yet several single trials found no recovery benefit.
- The mood review rated most studies at high risk of bias; gains shrank with controls.
- Immune evidence rests on one large shower trial and blood markers.
How this page was made
Label
- Search
- PubMed, Nov 14, 2026. Searches written by Claude Opus 5.5; papers ranked by PubMed
- First read of all 42 papers
- Claude Sonnet
- Independent second read
- Claude Haiku
- Disagreements settled by
- Claude Opus 5.5
- Page text written by
- Claude Opus 5.5
- Charts
- Drawn by code from the study records
- Source check by a person
- Not yet. Required before search engines may list this page.
- Expert review
- No
- Papers read in full
- 0 of 42; all from PubMed abstracts
- Method
- v0.2, created Nov 14, 2026
Search. We ran four PubMed searches for cold water immersion and muscle recovery, mood and immune health: pooled and systematic reviews since 2012 (10 of 45), trials in people (22 of 176), population studies (10 of 24). The first number is how many papers we read; the second is how many PubMed found. We took the ones PubMed ranks as most relevant. See the full PubMed search. Of the 42 papers read, 30 were on topic.
Limits. Digestery reads at most about 60 papers per question, so large fields are sampled, not covered in full. Abstracts can leave out key details, such as side effects and funding.
Review queue
These items wait for a person. Search engines are asked not to list the page until the first one is done.
- OpenThe short answer is new. It waits for a source check by a person.
- OpenPeake 2017 (nine men, biopsies at 2, 24, 48 h) may share participants with the second study in Roberts 2015; check overlap.
- OpenMoore 2022 and Moore 2023 share a first author and likely pool many of the same trials.
- OpenBuijze 2016 names trial registration NTR5183 in its abstract, but the record's trial registration field is empty.
- Open13 of 19 trial papers have no conflict-of-interest statement in PubMed; their stakes are unknown, not confirmed absent.
- OpenHuang 2025 reports myoglobin falling 436.3 ± 60.8%, impossible as a percent drop; check the full paper.
- OpenRose 2023 set relevant: cold water was only a comparison arm, and its own immune effect is not reported separately.
- OpenFyfe 2019 does not say people were randomized; direction set to harm for blunted fibre growth despite similar strength gains.
- OpenStearns 2018 calls itself a cohort study but randomly assigned athletes; kept as a trial.
- OpenStrength and performance recovery relabeled real_outcome per topic; Egaña 2019 and Yoshimura 2022 kept as function (same-session tests).
Page history
| Date | Change | Reason |
|---|---|---|
| Nov 14, 2026 | Page created from 42 papers. | First version of the page. |
Flag an error
A flag must point to a source: the passage in the paper, or a link to a study this page missed. A flag starts a new check. Votes never change a page.