1, exercise, you will sweat a lot and sweat internally. Contains a variety of harmful ingredients, such as salt, uric acid, etc., which will cause damage to the skin, so take a warm bath.
2, after fitness, the metabolism is vigorous, the capillaries are open, and warm water is used, close to the body temperature, 30, 40 degrees, so as to avoid cold approaching the body and getting rheumatism.