Have a fever The role of oil-absorbing paste is to help lose weight and promote gastrointestinal peristalsis. Sticking to the navel is hot, and fever is a thermal effect reaction, which is very comfortable to stick to. The oil-absorbing patch is mainly attached to the navel, which absorbs a variety of Chinese herbal medicines to promote the metabolism of the skin, decompose the energy and fat in the burning body, and forcibly excrete it.