Generally speaking, the president of fitness is the growth line. The growth line is usually formed because the growth rate of body fat and muscle exceeds the growth rate of skin, and the elastic fibers in dermis are pulled off. Growth line, also known as swelling line in clinic, is common in pregnant women or people who grow too fast and are obese. When people's bones, muscles, fat, etc. Growing faster than the skin will cause the elastic fibers of the skin to break, resulting in loose and swollen lines on the skin surface. It is suggested to have a light diet, avoid high fat and greasy food, eat less spicy food, quit smoking and limit alcohol. Pay attention to nutrition, eat more protein-rich foods such as eggs, milk and bone soup, and eat more fresh vegetables and fruits. Don't stay up too late, too tired. Pay attention to rest and combine work and rest.