No, but it can trim them. In trials where people sat in cold water right after every lifting session for weeks, strength and muscle still grew, but slightly less than without the cold56. The cost is small on average, and it has only been tested with the cold applied within minutes of lifting.
What was studied
An ice bath here means cold water immersion: sitting in water of about 10 to 15 °C, up to the waist or chest, for 10 to 20 minutes after training5. The trials compared lifting plus cold water with lifting plus a warm or neutral option: sitting in a room, or easy cycling (called active recovery).
Two trials set the scene. Both were read in full.
| Roberts et al. 2015 | Fyfe et al. 2019 | |
|---|---|---|
| Who | 21 young men with at least 12 months of lifting | 16 recreationally active men, no regular lifting for 6+ months |
| Training | lower body, twice a week, 12 weeks | whole body, 3 days a week, 7 weeks |
| Cold | 10 min, both legs to the waist, 10 °C | 15 min, to the chest, 10 °C |
| Comparison | 10 min easy cycling | 15 min seated in a 23 °C room |
| Source | 1 | 2 |
Then two meta-analyses pooled the trials: one for strength (10 studies, 170 people, 92% men)5 and one for muscle growth (8 studies, young adults)6.
In plain terms: small trials, mostly young men, cold water after every single session.
What the studies found
Trained men: less thigh muscle with cold water. In Roberts' trial, thigh muscle measured by MRI grew in both groups, but about three times as much with easy cycling as with cold water, a clear difference (P < 0.001)1. Leg-press and knee-extension one-rep maxes also rose more without the cold1.
Thigh muscle added over 12 weeks, relative to the easy-cycling group · %
New lifters: smaller fibres, same strength. In Fyfe's trial, the fast (type II) muscle fibres, the ones that grow most with lifting, grew with room-temperature rest and not with cold water. The gap was large (1,915 µm², effect size 1.37) but uncertain: the standard test just missed significance (P = 0.062)2. Strength rose the same in both groups (leg press P = 0.959)2.
Pooled strength: a small bite. Across 10 studies, cold water after training trimmed strength gains by an effect size of −0.23 (95% CI −0.45 to −0.01)5. An effect size measures the gap between groups in units of how much people normally differ; about 0.2 is small. When only the trained limbs were cooled, it was −0.31; with whole-body immersion to the chest, −0.08, not clearly different from zero5.
Pooled growth: a similar small dip. Across 8 studies, the growth estimate was −0.22 (95% credible interval −0.47 to 0.04), which the authors describe as "some evidence" of less growth with cold water, likely at least small6.
Cold water after lifting vs no cold, pooled effects on gains · effect size
An earlier pooled estimate put the strength cost at −0.603. The 2023 re-analysis explains why that was too large: it used a fixed-effect model and counted several outcomes from one study as separate studies. Re-run with one averaged effect per study, the estimate became −0.235.
In plain terms: cold water after every session did not stop progress, but it took a small slice off it.
Why it happens: the recovery–adaptation trade-off
Right after hard exercise, cold water does what people use it for. In a meta-analysis of 52 studies of active people, cold water after high-intensity exercise lowered soreness ratings 24 hours later (−0.89, 95% CI −1.48 to −0.29) and raised how recovered people felt (0.66)4. Muscular power also recovered a little better at 24 hours (0.22), but the recovery of strength did not significantly change4.
Over weeks, the same habit after lifting points the other way. A 2026 review calls this the recovery–adaptation paradox: short-term signs of recovery look better, while the signals that build muscle over a training block are dampened7. In the trials, cold water lowered markers of muscle-building signalling after sessions21. The review's summary: cold water "is neither uniformly beneficial nor uniformly harmful"; its effects "depend on the training goal"7.
This mechanism is the authors' explanation, built from signalling data. The outcome data are the growth and strength numbers above.
What it does and does not mean
It does not mean cold water erases gains. Thigh muscle grew in both of Roberts' groups, and Fyfe's groups gained strength equally12.
It does not mean strength always suffers. Fyfe found the same strength gain, and whole-body immersion was not clearly different in the pooled data25.
It does not tell us about timing. Every study in the growth meta-analysis applied cold water within 15 minutes of the end of each session. The authors state it is unknown whether cold water hours later, or only now and then, changes gains at all6.
It does not cover everyone. The trials were almost all young men; only 8% of the pooled strength participants were women5.
It is not about health. These studies measured muscle and strength after lifting, nothing else about cold exposure.
What this looks like in practice
The trials that found a cost used cold water after every lifting session, within minutes, for 4 to 12 weeks6. The review's own framework suggests leaving it out, or delaying it by more than 8 hours, in a block where muscle growth is the goal, and using it when fast recovery between sessions on the same day matters more, such as tournaments7. That framework is the authors' proposal, not a trial result. For the soreness side of the question, see does foam rolling work and does soreness mean muscle growth; for managing fatigue across a block, see how to deload.
The studies at a glance
| Study | Who was studied | Key result | Year |
|---|---|---|---|
| Roberts et al., *J Physiol*1 | 21 trained young men; 12 weeks; legs in cold water vs easy cycling | Thigh muscle grew about 3× as much without cold; strength rose more without cold | 2015 |
| Fyfe et al., *J Appl Physiol*2 | 16 men new to lifting; 7 weeks; whole-body cold vs room rest | Fast-fibre growth blunted with cold (large, uncertain gap); strength the same | 2019 |
| Moore et al., *Sports Med*4 | 52 studies of active people; single hard bout | Soreness lower at 24 h (−0.89); power recovery slightly better; strength recovery not significantly changed | 2022 |
| Grgic, *Eur J Sport Sci*5 | 10 studies, 170 people (92% men) | Strength gains trimmed: −0.23; whole-body cold −0.08, not clear | 2023 |
| Piñero et al., *Eur J Sport Sci*6 | 8 studies, young adults, 4–12 weeks | "Some evidence" of less growth: −0.22 | 2024 |
| Tornero-Aguilera et al., *Exp Physiol*7 | Narrative review | Recovery–adaptation paradox: helps short-term recovery, trims growth over weeks | 2026 |
Limits worth knowing
- Small trials. The two key trials had 21 and 16 men12.
- Mostly young men. Women were 8% of the pooled strength sample5.
- One timing only. Every growth study used cold water within 15 minutes of every session6.
- Study quality. The growth meta-analysis rated its studies fair to poor on one scale, and asks for caution6.
- A narrative review. The 2026 paradox paper is a narrative review, not a systematic one7.
- Abstracts only for the earlier −0.60 meta-analysis and the 52-study recovery meta-analysis.
Latest research
The newest paper we opened is a narrative review published in August 20267. It pulls the two sides together: cold water after exercise lowers soreness within 24 to 72 hours and speeds the return of heart-rate variability toward rest, while repeated use after lifting trims fast-fibre growth and strength gains (it cites the −0.23)7. It adds no new trial. The open question it names is the one the trials never tested: whether moving the cold away from the session removes the cost.
The short version
- Cold water after every lifting session trimmed strength gains slightly (−0.23 across 10 studies).
- Growth showed a similar small dip (−0.22 across 8 studies), with wide uncertainty.
- In trained men, the thigh muscle grew about three times as much with easy cycling as with cold water.
- Cold water lowered soreness after hard exercise; the cost to gains has only been tested with cold right after lifting.
Educational overview only — not medical advice.
