[Science] How much do you know about boys' little secrets?

Boys must understand the characteristics of their own body.

It's normal for boys to have large and small testicles

There are no two identical leaves in the world, put on the testicles of boys, is that there are no two identical testicles in the world, testicles not only look different, even symmetry can not be considered.

The main reason is that the two sides of the testicle development time is not exactly the same, this is not an exception, and will not affect the normal physiological function, so do not need to worry about~.

Penis can also be 'fractured'

The reason why 'fracture' is in quotes is because the male penis has no bones at all.

This “fracture” in medicine is also called “rupture of the white membrane”, this is because the male corpus cavernosum is rich in blood vessels, surrounded by a layer of white membrane, when the congestion and expansion, the circle of the white membrane will be stretched to the limit, then if the action is too violent or bending angle is too high, it may lead to the white membrane and the cavernous membrane of the penis.

 If the action is too violent or the bending angle is too high, it may lead to the tearing of the white membrane and the spongy body, thus causing a “fracture”.

These actions are dangerous in sex life:

• Sudden change of angle in woman-on-top position.
• The penis hitting the pubic bone.
• The penis strikes the pubic bone and bends forcibly during erection.

A rupture requires surgical repair within six hours, so whether you're masturbating or having normal sex, don't over-rape your penis;

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The testicles are cooler than the body temperature to protect the sperms

The skin surface of the testicles has many fold-like changes, and this is mainly used to regulate the temperature of the testicles.

• When the outside temperature is too high, the scrotum drops down and the folds open to dissipate heat.
• When the outside temperature is too low, the folds contract to keep the scrotum warm.

The optimal temperature of the testicles is 35°C, while the optimal body temperature is 37°C.

It is normal for the temperature of the testicles to be cooler than that of your own hand because the testicles need to be at a low temperature to protect the vitality of the spermatozoa, and too high a temperature will harm the spermatozoa.

Penis is not always straight

According to scientific statistics, about 25% of men have a twisted penis, and the types of bends are also divided into: up and down, left and right are different.

And completely upright penis, probably accounted for about 30% of the ratio: so the bent penis is not a strange disease, as long as it does not affect the sex life are normal phenomenon.

Men's asses are naturally curvier than women's~

Men are born with a narrow pelvis, while women have a short and wide pelvic cavity, and androgens can promote muscle growth and development of men's muscles are more developed than women.

So it is easy for a man to have a firm and elastic butt, and it is useless for a woman to envy it.

There are grades of hardness in men's penises

The hardness of a man's penis erection is graded.

• The first level of hardness: penis is not hard, feel like tofu, combat index is almost 0;
• The second level of hardness: penis slightly hard, but not normal intercourse, hardness like peeling bananas, combat index 30% ~ 40%.
• Third level hardness: penis hard, but not quite the best state, hardness like a peeled banana, combat index 50%~80%
• Level 4 hardness: the penis is firm enough, hardness like a cucumber, can enter the full combat state

As for the erection only reaches the first level or second level, this situation is recommended to seek timely medical attention.

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Men also have physiological period

Physiological period is not only for women, but also for men.

There are always a few days every month when men's testosterone and androgen levels are cyclically decreasing, their moods will start to drop, and they will experience physiological discomfort and other conditions, just like having a period;

Testicle pain is a real pain

The nerves and blood vessels on the male penis are very rich and fragile themselves, directly exposed without any protection, and therefore very sensitive to pain.

When men's private parts are hit and hurt by external forces, such as accidentally hit by a ball or kicked by someone, they will instantly feel sharp and intense pain, which will produce a feeling of nausea and wanting to vomit, and even loss of mobility in a short period of time, and there have been clinical cases of testicular pain leading to coma.

So what's the joke, you can't let your girlfriend just kick you in the testicles, and you have to protect them by playing with your brothers ~

Men can get HPV too

HPV, scientifically known as human papillomavirus, belongs to a large family of viruses.

The main reason it is known is because of the HPV vaccine, which has been publicized over the years, and several types of HPV have been linked to cervical cancer in girls.

But that doesn't mean it's a girl's virus. Boys can be carriers of HPV, too.

Compared to girls, who are more protected against HPV, boys are more likely to get rid of it because of their reproductive structures.

However, this is not an absolute rule. 30% of men are still infected with HPV:

• Low-risk types (6/11) can cause warts.
• High-risk types (16/18) are associated with penile cancer.
• The best age to get the HPV vaccine is 9-26 years old, but it is still effective until age 45.

 Masturbation is a normal physiological need

For adults, sex is a part of life, and masturbation is also a normal sexual activity that does not need to be ashamed of, just like sex with a partner.

Masturbation not only relieves the need to be sexually active, but also allows a person to temporarily get rid of some bad feelings.

From a clinical point of view, masturbation as long as you pay attention to cleanliness on the line, it has nothing to do with men and women, do what you can and have fun;

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Finally

This action 99% of men can not do not believe can try!

Men surface is very hard, private is also very hard, but sometimes will be hard to hide in the soft, too rigid easy to fold is the truth;

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