Two: barefoot running can effectively exercise calf muscles and protect ankles. This running mode can reduce the possibility of pain and injury, strengthen the muscle exercise of the calf, and be closer to the most primitive running mode of human beings.

Three: Running barefoot is more demanding on the environment. The soles of people's feet are different from those of animals, and the range of going out barefoot is limited. So it is best to run barefoot indoors, which reduces the chance of foot injury. As long as the room is cleaned, you can avoid the trauma caused by not wearing shoes.