After the age of 30, the metabolism is slow, so it is necessary to strengthen physical exercise, such as some ball games, swimming, aerobics and other aerobic exercises, which can consume excess fat in the body and achieve the purpose of losing weight. Secondly, on the basis of exercise, we should control the diet, control the intake of greasy food in the diet, don't eat less fried food or sweets, and again, don't overeat, and regularly quantify three meals.