Cold-water immersion is gaining popularity among athletes and wellness enthusiasts. But is it all hype, or does science back the benefits? A recent study from the University of South Australia (UniSA) takes a deeper look into the effects of cold-water immersion on health and well-being.
What Is Cold-Water Immersion?
Cold-water immersion involves submerging the body in water between 10-15 degrees Celsius. This includes cold showers, ice baths, and polar plunges, where exposure reaches chest level for at least 30 seconds.
Benefits of Cold-Water Immersion
UniSA researchers analyzed data from 11 studies with 3,177 participants. They found there maybe several short-term benefits:
- Stress Reduction: Cold exposure lowers stress levels, but the effects last only about 12 hours.
- Improved Sleep: Some evidence links cold-water immersion to better sleep, though most data is male-focused.
- Boosted Quality of Life: Participants taking 20-90 second cold showers reported slight quality-of-life improvements, but these benefits faded after three months.
- Fewer Sick Days: One study found a 29% reduction in sickness-related absences among those who took regular cold showers.

Risks of Cold-Water Immersion
While cold-water immersion is widely used for muscle recovery, the study also uncovered potential risks:
- Temporary Inflammation Spike: Cold exposure triggers an initial inflammatory response. While this may aid adaptation, it could be harmful to those with pre-existing conditions.
- Limited Long-Term Research: More studies are needed to determine who benefits most and the ideal approach to cold exposure.
Should You Give it a Try?
For those looking to reduce stress or improve recovery, it might be worth exploring. However, individuals with health conditions should consult a doctor before diving in.
For more wellness insights, check out the Compass Ohio Newsletter. For additional research, explore this University of South Australia study.