First of all, the appearance of hair on the body is actually a very normal situation. Hair is a normal skin appendage of the human body, especially during puberty, with the change of hormone level, the hair on the body will appear obvious growth, especially in some local areas, the hair will appear significantly thicker, longer and thicker. For example, males may develop a beard; and armpit hair may develop in both males and females. In addition to armpit hair, pubic hair will also happen; for men, there may also be obvious development like leg hair, chest hair and so on, in fact, this is not an abnormal situation, this is due to hormone levels with the growth and development of the normal body surface changes, so that the appearance of hair on the body is not a special situation, it is normal.