Cold Plunge Tubs

Cold plunge tubs are chilled tanks that hold water at a set temperature — typically 5–15°C — so cold water immersion can be done at home without ice runs. The tub changes convenience, not physiology: the published evidence is the cold-water-immersion literature.

What published research reports

The Cochrane review of cold water immersion (2012) reported reduced muscle soreness after exercise versus rest, from small trials of mostly low quality. The Journal of Physiology trial (2015) reported that routine post-lifting immersion blunted long-term muscle and strength gains versus active recovery. Published protocols use brief exposures of roughly 5–15 minutes at 10–15°C; the documented risks of cold-water shock and, in open water, drowning rise with colder temperatures and longer exposures, and people with heart conditions are advised in the clinical literature to consult a clinician first.

References

• Bleakley C, et al. Cold-water immersion (cryotherapy) for preventing and treating muscle soreness after exercise. Cochrane Database Syst Rev. 2012. PubMed
• Roberts LA, et al. Post-exercise cold water immersion attenuates acute anabolic signalling and long-term adaptations in muscle to strength training. J Physiol. 2015. PubMed