Experts point out that you can lose weight moderately during menstruation, but don't lose weight through dieting or strenuous exercise, otherwise you will not lose weight, but will have other serious adverse effects. Weight loss during menstrual period is also called physiological period weight loss method, which is to divide weight loss into four stages by using physiological cycle, namely, 1-7 days after menstruation is called weight loss welfare period, 7- 14 days after menstruation is called weight loss overspeed period, and 14-2 1 day after menstruation is called weight loss platform period.