What are the male response cycles?

Contemporary sex science research authority Mr. and Mrs. Masters and Johnson, based on their many years of experimental research results, published in 1966 the book "Human Sexual Response". The two concluded that the typical human sexual response cycle can be divided into four phases in the order of occurrence, i.e., the period of arousal, persistence, climax and extinction.

The male sexual response cycle is described below.

1. Excitement is the prelude to the beginning of sexual life, which mainly includes the initiation of sexual desire and the completion of the psychological preparation for the union of the sex organs. Male sexual arousal is usually characterized by penile erection. This is a direct result of the vascular congestive changes in the cavernous body of the penis. There is a significant increase in the sexual sensitivity of the erect penis. Penile erection can occur within 10 seconds of receiving the effects of psychological or physical stimulation, and the hardness of the erection is related to the intensity of the stimulus and the psychological and physiological state at the time. During sexual arousal, the scrotum becomes engorged with blood, smooth in appearance, flattened, with a thickening of the fleshy membranes, and the testes are enlarged and elevated. Muscle tension increases throughout the body, and heart rate and blood pressure may increase and rise. In some men, the nipples also appear erect. This phase will subside temporarily if it does not progress to the persistent phase in time, but can recur with stimulation.

2. The level of sexual arousal and sexual tension in men during the sustained phase is a continuation of the level at the end of the arousal period. In this period, the penile congestion is strengthened, the penis glans is enlarged and darkened; the testicles are obviously enlarged and fully elevated, often accompanied by the characteristic anterior rotation; the urethral bulbourethral glands secrete mucous secretions from the urethral orifice, and sometimes active spermatozoa can be seen. Muscle tension is also further increased, with mild spasmodic contractions of certain parts of the muscles; respiratory intensity is markedly increased, with hyperventilation occurring toward the end; the heart rate is markedly increased, averaging 100 to 175 beats/min; and the blood pressure is markedly elevated, with systolic and diastolic blood pressures elevated by an average of 50 mm Hg and 25 mm Hg. In some men, there is nipple erection and swelling; sometimes sexual erythema and anal sphincter contraction are seen.

3. Orgasm is the period of highest excitement in the male sexual response cycle, and is the fulfillment stage of sexual pleasure, usually lasting only a few seconds. At the onset of orgasm, men experience an irresistible pressure to expel semen, accompanied by a high degree of sexual excitement and uncontrollable violent movements, with the head of the penis more distended. With the ejaculation of semen, sexual pleasure reaches its peak. The process of ejaculation can be roughly divided into two stages: first, the smooth muscles of the epididymis, vas deferens, seminal vesicle glands, and prostate gland contract, so that semen is pooled in the urethro-prostatic department, while the internal urethral sphincter closes, blocking the flow of semen into the bladder. Subsequently, the ejaculatory ducts, the muscles around the urethra, and other muscles in the perineum contract to expel the semen. Usually the discharge pressure is so high that semen can be ejected up to half a meter. The contractions of the ejaculation reflect the intensity of the orgasm and also the intensity of sexual pleasure. The more contractions there are and the greater the volume of ejaculate, the higher the degree of sexual satisfaction, and this intensity is related to the intensity of sexual stimulation and the physiological and psychological state at that time. In the orgasmic period, casual muscle control, non-casual muscle contraction, muscle group spasm, the anal sphincter involuntary contraction; respiration is extremely enhanced, the frequency can be as high as 40 times / min; heart rate range of 110 ~ 180 times / min; blood pressure rise is more pronounced than the duration of the period, the systolic and diastolic blood pressure of some people can be increased by 100 mm Hg and 50 mm Hg respectively. Because of this period of sexual excitement is very high, the body tension is very strong, some patients with chronic diseases can have accidents, or even death.

4. The period of recession with the end of ejaculation, mental and physical relaxation. Penile erection disappears, initially weakening faster, and then slows down; the congestion of the pelvis and scrotum, testicles quickly subside. Various physiological reactions that occur during sexual arousal disappear quickly, and the heart rate and blood pressure return to normal. Most men may experience post-coital sweating, mainly on the soles of the feet and palms of the hands.