Compared with men, women are born with less muscle and more fat: research shows that the body fat of normal men accounts for 12-20%. But for healthy women, the body fat ratio is between 16-30%. This is because women need to store an extra part of body fat for childbirth and breastfeeding. Women have less muscles, which affects women's basal metabolic rate, which means that they burn less calories at rest. So generally speaking, lack of strength, slow running speed and so on.

2. Hormone balance

The main hormone of men is testosterone, while that of women changes every week (especially during menstruation). Changes in estrogen and progesterone will cause changes in appetite, metabolism, fat storage and fat mobilization. Because the production and storage of estrogen in women need fat, and these fats are often stored in buttocks and thighs. It is easy for girls to store fat after eating, which makes it easier for girls to increase the percentage of body fat. On the contrary, men's testosterone content is higher than that of women. This hormone can help muscle growth and repair, so if they also do anaerobic exercise, men's muscles will grow faster than women's.

3. Lifestyle solutions

Although the level of testosterone that promotes metabolism in women is low, there are some strategies that can be used to promote or inhibit other hormones to help control weight. Insulin-insulin can promote the body's intake and utilization of glucose, affect the blood sugar level, and affect the hunger for food. Therefore, it is suggested to reduce the intake of sugar in the diet, and the staple food is mainly brown rice, coarse flour or potatoes, which is rich in dietary fiber. Cortisol-Cortisol is a stress hormone, which can stimulate appetite and increase the production of glucose, which can be converted into fat.

4. Brain chemistry

Brain chemistry, translated, means that girls are naturally more fond of eating than boys. Here is a small study: show a group of men and women who haven't eaten for 17 hours their favorite food, and then let them think about other things for 40 minutes.