Part of the skin outside the sex organs is very sensitive to the sexual stimulation of the opposite sex, and its sensitive same-sex excitement maintains a reflective connection. These parts of the human body are called "sexy areas". The meaning of "sexy zone" is to accept the stimulation of the opposite sex, enhance sexual excitement and promote the occurrence of sexual behavior. There are great differences in sexy areas between men and women. Men are more active in the process of sexual life, so the sexy area of men is narrow and concentrated. The male sexy zone is also divided into three parts from strong to weak. The first part focuses on sexual organs, including: the penis neck, that is, the coronal groove; Penile frenulum, located directly below the penis head; The skin of the penis, especially along the urethra. The second part is the part around the sex organs, such as scrotum, perineum and inner thigh. The skin between anus and scrotum, scrotum and inner thigh is sensitive to sex under gentle touch. These parts are also more sensitive to sexual stimulation, second only to the first part. The third part is some parts of the chest, lips and fingers. Sexual sensitivity of lips can be proved by kissing; Male fingers are particularly sensitive. When men are in contact with women, touching women's bodies will produce strong sexual excitement. The initiative and aggression of men in sexual life are often bridged by the sexual sensitivity of fingers. With the physiological aging of various systems in the whole body, the reflexivity of the nervous system and the sensitivity of the skin to stimulation will also decline to varying degrees with age. The sensitivity of skin in sexually sensitive area is lower than that in young age, and the threshold of sensory stimulation needed to achieve sexual excitement will also increase one after another. The change of physiological characteristics of these sexy areas may be one of the reasons for the slow sexual response of elderly men. Man's G-spot Verrul and Feili found a G-spot in a woman's vagina. Stimulating this point can stimulate orgasm more than stimulating clitoris. In fact, men also have parts similar to the G-spot, which Dr. Pilcher calls "F" and "R". To find the most sensitive "F" area and "R" area of male reproductive organs, it is best for husband and wife to lie side by side in bed naked, touch the bottom of penis with their hands, and go down to a small piece of skin connected with the foreskin of penis along the coronal edge. If the foreskin is not cut off, you must gently pull up the foreskin to find it. This small piece of skin is called "lacing" or F area, which is one of the most sensitive areas for men to have sex. During sex, the F area goes deep into the moist and warm vagina and is strongly stimulated, which leads to the contraction of male pelvic muscles. However, the posture of his wife when she is strongly stimulated will often cause lasting troubles to many men, because when a man's F area is stimulated, he will feel out of control. At the same time, the stimulation of the wife's area C (referring to the clitoris area) is usually much weaker than that of the man's area F, so it is difficult to have orgasm contraction, and even if there is, it is much slower than that of men. R area refers to a raised "middle seam" in the middle of the scrotum, which divides the scrotum into two parts. The skin of scrotum is very special, and it is as sensitive as the labia of a woman's vaginal opening. The wife rubs her fingertips back and forth along this middle seam on the scrotum surface, which can give her husband great pleasure. Another kind of stimulation that the wife can do is to start from the bottom of the scrotum with the tip of the middle finger, go up along the scrotum seam and touch the penis. This kind of stimulation can help men integrate scrotum and penis into a reaction unit, instead of the reaction based on penis neck developed in the past.