Giving a head massage to a man means that someone else massages his scalp, and the subject being massaged is a man. In addition, massaging the scalp can stimulate the cerebral cortex, thereby improving work efficiency and supplying more nutrients and oxygen to the brain tissue. Therefore, this expression can not only be used to specifically refer to the action of head massage, but also can be used to indicate that elderly people often massage the scalp, which can prolong life.
