Why do girls insist on iron training and it is not easy to develop big muscles?

Muscle is not as easy to grow as expected, and many factors will affect the growth efficiency of muscle.

The first factor is testosterone. Testosterone is a hormone secreted mainly by men, but also by girls. The level of testosterone determines the growth rate of muscles.

People with high testosterone levels will grow faster and build large muscles easily. The testosterone level of girls is only about 1/20- 1/30 of that of boys, so the difficulty of building big muscles will naturally increase by dozens of times.

The second factor is the strength level. In order to make muscles stronger, we need to customize a scientific fitness plan and gradually improve the load-bearing level. Only when muscles are stimulated by external forces can they become stronger. The strength of girls themselves is relatively weak, far less than that of men, which means that it is not easy for girls to develop big muscles.

The third factor is protein's supplement. Muscle growth is inseparable from amino acid nutrition, and amino acids are indispensable raw materials for muscle synthesis.

In the process of muscle training, you need to supplement enough protein, eat more eggs, milk, chicken breast, fish, protein powder and other foods, so that the muscles gradually become strong and full. However, many girls will control their diet when exercising, and it is difficult to train strong muscles because of insufficient nutrition supplement.

The fourth factor is rest time. Work and rest should be combined when exercising, not overtraining or three minutes of heat. To allocate the training of muscle groups reasonably, the large muscle group should rest for 3 days after training and the small muscle group should rest for 2 days after training. Keep resistance training 3-4 times a week, fully stimulate the target muscle group, and gradually improve the figure.

Therefore, girls don't need to be afraid of iron training at all. On the contrary, girls who insist on stretching iron can effectively prevent muscle loss, keep a tight figure, develop charming hips, vest lines and long legs, and effectively reduce the chance of getting fat.