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Cold Showers: Boost Health, Slash Sick Days
4 Nov
Summary
- Cold showers reduced sick days by 31% in a Swiss trial.
- Participants felt more awake, refreshed, and driven.
- Cold water may boost endorphins and reduce inflammation.

A recent 12-week trial conducted by University of Basel researchers in Switzerland revealed significant health advantages associated with deliberately taking cold showers. The study involved 719 adults aged 18-65 who endured blasts of cold water, as low as 59 degrees Fahrenheit (15 degrees Celsius), for 30 to 120 seconds. These participants reported feeling more energized and revitalized throughout their day.
Remarkably, those who participated in the cold shower regimen took 31 percent fewer sick days compared to those who did not. This consistent exposure to cold water also fostered a sense of greater drive and enthusiasm, stemming from the accomplishment of engaging in an activity outside their comfort zones.
The findings build upon previous research, including a 2025 Harvard study and a 2016 Dutch investigation, both of which noted reduced sick days and improved quality of life. Experts theorize that cold-water immersion positively impacts health by elevating endorphin levels, reducing inflammation, and enhancing blood circulation.
While the benefits are compelling, experts advise caution. Individuals with specific health concerns, such as hives from cold exposure, heart disease, or Raynaud's syndrome, should consult a physician before trying cold showers. It is recommended to start with short durations, below 60 degrees Fahrenheit, and gradually increase as tolerated, always listening to one's body.