我看过一些资料，都说摸索找到对的位置，给予适当的刺激，通过练习每个女人都可以潮吹

岸芷汀兰 发表于 2021-02-22 21:13

https://www.jsm.jsexmed.org/article/S1743-6095(15)30405-7/fulltext

有论文的

是的。 人跟人真的差别很大，所以我一直觉得一夫一妻不科学。。。。跑走

cqcq 发表于 2021-02-23 19:09

进化生物学上讲，是不太合适

“Taken as a species, humans cannot be described as exclusively monogamous. Divorce rates and extramarital affairs attest to that. Also, nonidentical twins occasionally have different fathers (although how often this happens is unknown since it’s not usually detected unless the fathers come from different ethnic groups). But humans are not wildly promiscuous, either. Some individuals are faithful to one partner for their whole lives; few have or admit to having thousands of sex partners. Moreover, a couple of indices put humans as a whole on the monogamous end of the scale. First, consider physical differences between males and females. In monogamous species, males and females tend to be roughly the same size; in species where a few big males hold harems, males tend to be enormously bigger than females. Remember the southern elephant seal, where adult males are typically twice the length of adult females—and may be as much as ten times heavier? In the gorilla, adult males are typically twice the weight of adult females. In contrast, human males tend to be only slightly bigger than females, and there is considerable overlap, with some women bigger than some men.

Next, consider physical differences between human males and other male apes. As you know, testicle size is usually associated with the risk of sperm competition. Males that are at low risk of sperm competition—either because they are good at defending a harem or because they are paired with a faithful female—generally have testicles that are small in relation to their body size. Males that are at high risk of sperm competition—either because they pursue a strategy of seducing the partners of other males or because most females mate promiscuously—generally have enormous testicles in relation to their body size. Male gorillas are at low risk of sperm competition and have tiny testicles. Male chimpanzees are at high risk of sperm competition and have gigantic testicles. In comparison, human males have medium-sized testicles, suggesting a low to moderate risk of sperm competition. This fact, plus the relatively small size differences between men and women, is exactly what would be predicted for a mostly monogamous species.”

Excerpt From: Olivia Judson. “Dr Tatiana's Sex Advice to All Creation.”

重点在“mostly monogamous”

回复 13楼MeekSarah的帖子[/url]

亲爱的sarah，请相信现代医学。。除非你的医生给你说过性事可能引发危险，不然还是放心放松去享受吧

trudily 发表于 2021-02-23 23:18

[url]https://www.amazon.com/Mens-Private-Parts-Reference-Prostate/dp/0743213440

书里讲，有人鸡鸡弄断了的。。。

[url]https://pubmed.ncbi.nlm.nih.gov/29285596/

这篇更全

Vaginal lubrication fluid

Lubrication fluid is an ultra-filtrate of blood plasma. Blood flow in the genital area is increased during sexual arousal, and LF from the vaginal venous plexus enters the vaginal lumen transvaginally. 

Female ejaculation and female prostate

A “real” FE is the secretion of an extremely scanty (few milliliters), milky fluid by the female prostate, which was described by de Graaf in 1762 and later de- scribed as Skene’s paraurethral glands. The female prostate is an exocrine organ of variable size and location and contains cellular equipment for neuroendo- crine activity. According to various authors, it exists in only two-thirds of women, 1 in 2 women, or in 6 out of 7 women. 

Squirting (gushing)

Squirting is the involuntary expulsion of a substantial amount of urine during sexual activity.

Coital incontinence

Coital incontinence is manifested by an involuntary leakage of urine during sexual intercourse and could be classified into penetration and orgasm forms.