Breast enhancement (menstruation 1-3 days). American studies have found that on the first 1-3 day of menstruation, ovarian estrogen secretion reaches its peak, which can stimulate breast fat accumulation, so it is the best time for breast enhancement. Eating carrots, potatoes, soybeans and nuts in these three days can triple the breast enhancement effect. Studies have shown that calcium can stimulate estrogen secretion. It is suggested that oral calcium tablets should be taken two days before menstruation to indirectly stimulate secretion and breast enhancement.

Slimming (last two days of menstruation). Dutch sports medicine experts pointed out that due to the fluctuation of menstrual hormones, the last two days of menstruation and one week after menstruation are called "high-efficiency period of weight loss", and the fat decomposition efficiency is 2% higher than usual. Experts suggest: in the last two days of menstruation, practice yoga for 20 minutes every day, walk fast 15 minutes, and increase small-scale stretching training; After menstruation 1 week, jogging, cycling or climbing stairs for half an hour every day is the best way to lose weight.