in 13.9°C water for one hour, three times a week, for six weeks, increases the number of lymphocytes, white blood cells that fight bacteria, viruses, and toxins. Another study found that swimming in winter reduces respiratory infections by 40%.
Improved mental resilience
Taking cold showers requires a certain amount of mental fortitude, as few people enjoy cold temperatures. However, overcoming this discomfort can improve tolerance to unpleasant situations and help better manage daily stress. Wim Hoff, an extreme athlete nicknamed “the Iceman,” is a strong advocate of cold
