A MAN’S RESPONSE TO SEX: BODILY CHANGES OCCUR
As well as causing the penis to become erect, the increased blood supply leads also to reddening and mottling of the skin in about a quarter of all men. This “sex flush” starts in the lower abdomen and spreads over the skin of the chest, neck and face. It may appear on the shoulders, forearms and thighs and, when fully developed, may even look like measles. Its appearance is always evidence of high levels of sexual excitement. After ejaculation, the sex flush disappears very rapidly.
A man’s breast, like a woman’s breast, is very responsive to sexual stimulation. Though the pattern is inconsistent, nipple swelling and erection, which may develop without direct contact and can last for an hour after ejaculation, occurs frequently. Many women are not aware that a man’s nipples, and even his chest, can become erogenous zones if they are given enough stimulation.
A man’s heart rate increases with sexual excitement, and his respiratory rate and blood pressure also rise. His scrotum thickens and his testes will be drawn closer to his body. Many men sweat involuntarily immediately after ejaculation, but this is not proportional to the amount of physical exertion during intercourse. Sweating is usually confined to the soles of the feet and the palms of the hands but may appear on the trunk, head, face and neck.
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