5 secrets of "little brother" (sex knowledge adult novel)

(1) “Little brother” may also pretend to be sick. It is reported that more than 90% of impotence patients are caused by psychological factors. Only a small part is due to physiological factors, including reproductive organ diseases, hormonal imbalance, diabetes, spinal injuries, drug abuse, alcoholism, surgery and aging, etc.
Therefore, if your "little brother" is sick, don't be overly anxious. First of all, psychologically, don't put pressure on yourself, because sometimes it is not your "little brother" who is sick, but you are worrying about yourself and adding burden to yourself. For example, occasional premature ejaculation may be caused by men's lack of experience, or excessive excitement or nervousness, and is not a disease.
What happens when “little brother” really gets sick? Inflammation of the testicles, white or yellow discharge from the penis, pain and discomfort during urination, or discharge from the anus when the anus is irritated. At this time, you should stop sexual activity immediately because your "little brother" may be in trouble or have a sexually transmitted disease, so you must see a doctor.

(2) Sometimes an erection is not a pleasant experience. In order to make the penis erect and last for a long time, many men spend a lot of effort. But sometimes, when the "little brother" is gone for a long time, it is not a good thing. Not only will it prevent people from experiencing the joy of sexual desire, but it will also make them unable to enjoy it and suffer. Because the penis is mostly made up of spongy tissue covered with a layer of epidermis, when sexually excited, the spongy tissue becomes engorged with blood, making the penis harder, longer, and thicker for sexual intercourse, which is the so-called "erection." It is quite painful if the penis remains erect for too long and does not subside.

(3) The life span of sperm: Emergency contraception is generally limited to 72 hours of sexual intercourse, which is related to the survival time of sperm. It takes about 90 to 116 days for sperm to be produced, and it can survive in the vagina or cervix for 72 hours.
(4) The size of a man’s penis varies from person to person, just as people vary in height, weight, and body shape. Men’s penises also vary from person to person. But the size of the penis of Oriental men does not vary much, generally around 10 to 15 centimeters. What you need to understand is that sexual ability has nothing to do with the length of the penis. The bigger the penis, the more useful it is. If it is not particularly short, it generally has no major impact on sex life. Therefore, when it comes to the size of your little brother, don’t point out other people’s shortcomings or show off your own strengths.
(5) Men also have G-spots