When performing pull-ups, the skin of the hand is squeezed or rubbed against the steel tube, which in the long run tends to cause wear and tear on the soft tissues of the hand. In order to protect the skin of the hand, the skin tissue may be overgrown and hardened, i.e. callus, to alleviate the pressure and damage of the steel pipe on the skin of the hand. Therefore, the phenomenon of painful calluses on the hands when performing pull-ups is usually a normal phenomenon and does not require too much concern. If the hand callus is painful when performing pull-ups, you can temporarily stop the movement to avoid further aggravation of the pain symptoms by local stimulation. At this time, you can soak your hands in hot water to promote blood circulation, soften the stratum corneum, you can also apply petroleum jelly or moisturizing cream, etc., in order to alleviate pain and protect the skin of the hands. Meanwhile, after the cuticle has softened, hand calluses can be removed appropriately to protect the skin. To avoid the above discomfort, it is recommended that gloves can be used to provide protection when performing pull-ups to minimize injury. In addition, when performing pull-ups, blisters may appear, which also need to be treated symptomatically to avoid infection. Usually, small blisters should be observed to see if they can be absorbed on their own, if they can be absorbed on their own, then no special treatment is needed. If the blisters are large or do not absorb on their own, then they need to be treated in a hospital. After the doctor sterilizes the blister with alcohol or povidone-iodine, a sterile needle is used to suction the fluid inside the blister, and then a sterile bandage is applied to promote recovery.