The major function of sweating is to regulate body temperature and throw out the toxins not required by the body through millions of tiny sweat glands in the skin. Sweat that evaporates from the skin immediately, is insensible perspiration, while sweat that forms drops is sensible perspiration. Sweat is produced by two types of sweat glands. The exocrine glands are found mainly on the soles of the feet and palms of the hand. The apocrine glands are in the armpits and around the anus and genitalia. Sweat is produced in response to a stimulus such as fear or sexual arousal.