The first thing to say is sex hormones, which is undoubtedly the biggest factor leading to the difference. The difference in muscle mass between men and women is mainly due to the higher testosterone level in men and the higher estrogen level in women. Estrogen receptors exist in human muscles and play an important role in obtaining the adaptability of aerobic training.
The secretion of testosterone (androgen) is beneficial to muscle gain, but for women, the synthesis of androgen becomes less. If she is as strong as a man, this woman will usually work harder. Moreover, from the results of fitness, men tend to be more burly and powerful, while women are more feminine.
Moreover, under the same weight, women generally have higher body fat content, lower muscle mass and lower enthusiasm for sports than men, which makes the foundation of physique and muscle mass lower than that of men under the same weight, and the external social environment has stricter requirements for women's weight, diet and appearance.
Moreover, the pursuit of fitness between men and women is also very different. Men's pursuit of strong thighs not only shows men's brave and powerful characteristics, but also contributes to the growth of muscles in other parts of the body. However, the thick thighs are exactly what women don't like. Many women hardly practice and have thick thighs.
In fact, there are differences on the whole, but they are not very big. The main thing is that I am willing to take the time to pursue the results I want. In fact, these differences are not that important.