Before menstruation is more important than during menstruation. Before menstruation, women generally have a strong appetite and love sweets, and their weight will increase by 2-3 kilograms. If they control their weight before menstruation and do 1-2 hours of exercise every day after menstruation, they can effectively lose 2-3 kg within 3 days. But the purpose of women's weight loss is not only to lose weight, but also to shape. Jogging, mountain climbing and cycling can effectively reduce visceral fat and consume excess calories, but there is no targeted help for women with excessive subcutaneous fat. You'd better practice by yourself after studying your major. I'll give you a website: They have professional training in www.shaping.com.cn, and then you can practice by yourself.