How much strength can muscles produce?

Muscles can produce great strength, which we can't imagine. According to calculation, if the muscles of 6 square centimeters contract at the same time, they can lift 20-60 kilograms. The muscles that humans chew can actually pull up people of medium weight. It is estimated that if 300 million muscle fibers in the human body contract together in one direction, the strength can reach 25 tons, equivalent to a crane. A person who has practiced Qigong can kick up to half a ton with one foot, and he can kick off a stone pillar with a thick bowl!

People who exercise regularly have strong muscles, thick muscle fibers and great strength. It is calculated that a healthy young man can increase his muscle strength by 50% after half a year's strength training. Muscle movement is controlled by the brain. In the case of saving people, saving people or threatening their lives, they are highly nervous and their nerve cells are extremely excited. At this time, they can maximize the strength of muscle storage and do things that they can't do at ordinary times. Li Guang, a famous Han Dynasty soldier, saw a stone in the grass and thought it was Crouching Tiger, Hidden Dragon. He was so scared that he threw the bow out and shot it with all his strength. As a result, the arrow hit the stone. That's why you can't shoot into the stone when you shoot again.