It belongs to a kind of massage.

Muscles are usually in a state of stretching and contracting, but the shape and function of muscles are different, and the thickness of muscle fibers is also different, which will have different effects on people's mental and fatigue state. Therefore, exercising muscles in various ways will promote microcirculation and make muscles develop healthily in an ideal way.

The purpose of pinching (pinching muscles) is to activate a large number of immune cells "hidden" on both sides of the spine, thus achieving the purpose of strengthening physical fitness. It is the same as the "circuit" of "scraping"

Suggestion:

Du meridian, starting from the muscles at the end of the spine (bounded by the sides of the lower part of the thumb and forefinger), has been going up the spine to the neck. When reaching the neck, lift it up vertically for 3 times, and then pull it down with the index finger and middle finger to relieve the pain and relax the muscles.

Knead muscles for 30 minutes before going to bed, for children 10 minutes.