Pull-up refers to the stage when the stock price is mainly rising, the market is attractive and the increase is considerable.
Attention should be paid to stretching: when stretching, you don't have to stretch yourself too tightly, which is not conducive to muscle stretching, especially before taking part in sports. You should relax, take a deep breath and stretch your muscles carefully, which can also help you eliminate tension; People are all symmetrical. If we only do half of the body when stretching, the extensibility of the other part of the body will be greatly affected.
Therefore, it is necessary to maintain the stretching action on both sides and reduce the difference.