It doesn't work. Or of little use. Most fat people like to eat fat meat and snacks. And it is eating too much and lack of exercise. If you want to gain weight, you must pay attention to controlling calories and fat, low-fat diet and low-greasy food. Diet should be light. Eat more fruits and vegetables. Pay attention to eat less fat and reduce the intake of snacks. Pay attention to negative heat balance. We must pay attention to strengthening physical exercise to promote the consumption of calories, be patient and persistent. Those who like tea can also choose Eucommia male scented tea. Long-term drinking can relieve constipation and lose weight. Plus the usual moderate exercise, running, swimming and other aerobic exercise.