14°C water did not increase norepinephrine levels, while an hour in 13.9°C water increased them by 530%. Fortunately, similar benefits can be obtained in a shorter time if the temperature is even lower. For example, a 20-second immersion in 4.4°C water, repeated three times a week for 12 weeks, increases norepinephrine levels by 200 to 300%.
Reduction of inflammation
Chronic inflammation is associated with many modern diseases, such as heart disease, diabetes, cancer, arthritis, and inflammatory bowel disease. Cold therapy may reduce overall inflammation in
