In addition to being used as a source of heat, human body fat can be consumed by burning, and it can also be secreted into the body through sebaceous glands. Sebaceous glands exist in almost all skin of human body, and sebaceous glands secrete oil to cover the skin surface. When taking a bath, the sebum secretion of the skin will be washed away, which will immediately prompt the sebaceous glands to secrete new sebum. Therefore, frequent bathing, especially hot bathing, can enhance the secretion of sebaceous glands, and then discharge more oil and help eliminate human body fat. Therefore, to reduce body fat, in addition to reducing calorie intake and strengthening exercise,