Recommended by Xiaobian: The secret of letting men grow up!
The size of the "little brother" is not absolutely important!
Some surveys have shown that the average length of Chinese men's penis is 13.4 centimeters after erection, far exceeding the needs of women's sexual needs.Therefore, in sexual life, there is no need to worry about long hair for your penis.
Calculate whether the size of the penis is normal!
International Men's Health Organization (MTD) obtained through nearly 30 years:
Normal penis length m = (height T-105)*0.618/3.14 (cm)
Normal penis diameter D = m/3.14 (cm)
(Europe and the United States = Asia/1.414/0.618) cm
Men's "hardness" is divided into four levels
Studies have shown that hardness is the most basic element of men in sex. If the penis is not hardened, it is mainly because of the problem of penile blood vessels, and the blood vessels are not congested enough.There are also nervous problems.Insufficient hardness is the first type of problem in erectile dysfunction, and it cannot be inserted without hardness.
Level 1 is the worst, the penis has increased congestion, but it cannot be erected and cannot be inserted;
Level 2 is slightly better, there is a slight erection, but it still cannot be inserted;
