The principle of muscle growth through exercise

Recently, a news report about a white-haired grandfather who became a fitness expert has been circulating on the Internet. He started exercising when he was 70 years old. After more than 20 years, his muscles are very strong and his physical condition is very good. He does not look like a man who is almost a hundred years old at all. Many people know that exercise can help you grow muscles, but many people don’t know why exercise can help you grow muscles. Today we have invited relevant experts to tell us the principle of how exercise can help you grow muscles.

There are many muscles in the human body, which are composed of muscle fibers and tendons. Each muscle fiber is very thin, but many muscle fibers are tightly packed together. Tendons are located on both sides of muscle fibers. A muscle generally has two tendons (such as the biceps), three (such as the triceps) and four tendons (such as the quadriceps). Muscles are attached to bones. When a person wants to exercise, the muscle fibers contract or straighten, pulling or pushing the bones to move.

When people do weight-bearing exercises, the muscle fibers in the exercised part contract or stretch under the force. At this time, some muscle fibers will inevitably break (but don't worry, they can still grow back, these are only a small part of all your muscle fibers). When you rest after training, your body begins to repair itself. Your body will mobilize a large amount of nutrients such as protein to reconnect the broken muscle fibers. However, the rebuilt muscle fibers are not exactly the same as the original ones. Instead, they are thicker and stronger than the original ones. This is an instinct evolved by human beings. After each training session, some muscle fibers will become thicker and stronger, and this is how human muscles become stronger. Generally speaking, the number of muscle fibers in a person will not increase after adulthood. Becoming stronger after exercise is entirely due to the fact that each muscle fiber has become thicker.

What is the principle of muscle growth through exercise? After looking at the introduction above, we have already understood the principle of muscle growth through exercise. It turns out that the muscles in the body will perform muscle contraction and extension during exercise, which will allow the muscle fibers to grow better, thereby allowing the muscles to get better exercise, so that the muscles become more and more, and the muscles become stronger.