Briefly soaking in cold water, typically between 45 and 55 degrees Fahrenheit, in a plunge tub or ice bath. Popular among athletes and health enthusiasts to help soothe sore muscles and boost alertness.
Cold showers were linked to 31% fewer sick days in a 12-week Swiss study.
The study involved 719 adults aged 18–65. They regularly stood under cold water for 30–120 seconds. Water was as cold as their plumbing allowed, reaching 59°F (15°C)
In 40 active adults, cold water showed no clear edge over heat or rest for strength recovery or soreness over 72 hours.
The University of East London report compared [Cold Water Immersion](/health-practices/sleep-recovery/cold-plunges-and-