Disadvantages: arm muscles are easy to strain, and pull-ups themselves are pulling the body with their arms. If people who don't exercise or do little exercise suddenly do pull-ups, the muscle ligament of the arm is easy to strain. After muscle strain, there is a sharp pain in the strained arm. You can touch the cord-like lump formed by muscle tension with your hand, causing obvious tenderness, local swelling or subcutaneous bleeding, and the activity will be obviously limited.
Pull-ups attract attention
In the process of pull-ups, the chest can be slightly raised instead of perpendicular to the ground. The posture is a bit similar to the pull-down of the high pulley in front. There is a feeling that the chest will hit the horizontal bar, and then the legs can be hooked back or straightened. The core of the body can try to keep the body stable and not shake, which can make the back muscles work better.
Pull-ups, shoulder blades are contracted, which is the most important thing in the back. Studies have found that people with greater scapular mobility will have better back training, so in this process, they can train the scapula alone to keep their arms in a vertical natural state and relax and contract the scapula. You can use straight arm pull-down, rope anti-bird, anti-boat sliding for training to overcome the bottleneck of pull-ups.
Refer to the above? Baidu Encyclopedia-Pull-ups, People.com-How do experts practice pull-ups