Do you remember the 'Friends' series where Chandler confesses to Monica that he had an orgasm the night before? It turns out that a surprising number of men do it. Much is written about the myriad things that men do not know about women's enjoyment. But there is a whole world with research on male orgasms and related facts that women would never think of. Here are nine very interesting revelations.

Hallelujah, all men are 'bigger' than they think

More precisely, twice as large. Like a woman's clitoris, half of a man's penis is hidden in his body, and its root is attached to the pubic bone.

Men can also play an orgasm

Men may be from Mars and women from Venus, but both sexes are united in one little-known way: men also play orgasms to spare the feelings of their partners. In a 2010 study by the University of Kansas, 25% of men surveyed said they had an orgasm, and for the same reasons that women so often cite: stress, exhaustion, alcohol and drug abuse. And, of course, men's two big worries - excitement about performance and erectile dysfunction.

How do you think men are able to hide 'evidence'? The answer is simple - get rid of condoms quickly before they get caught. For those who work without a condom, Richard Hering in his book 'Talking Cock' recommends a rather innovative method - spitting on her rounds while doing it in a doggy position!

‘Grow-ers’ and ‘show-ers’

The penis of Latvian men is on average about 14 cm long (in an erect state) and a few centimeters shorter when there are none. However, according to sex researcher Alfred Kinssi, not all penises behave equally. He analyzed more than 1,000 penis measurements and found two types of the penis: 'growers and 'showers. The penis, which appears large when relaxed but does not stay particularly tall with an erection, are called 'showers, while those that become much larger than their normal size are called 'growers. Shorter flaccid penises tend to get about twice as long as longer penises, according to Kinssi.

However, the data also showed that a large proportion of penises are neither 'growers nor 'showers. 12% of penises in the erection state increased by one-third or less and 7% - doubled in length.

Sex> masturbation

Although all orgasms are great, orgasm from sexual intercourse is qualitatively different compared to masturbation. A 2006 study published by the University of Paisley (UK) and the Swiss Federal Institute of Technology found that prolactin levels in the blood of both men and women after sex were 4 times higher than after masturbation.

Because prolactin is responsible for causing satisfaction and satiety in the brain, it means that orgasm affects us more positively after sex. This also explains why men need a rest period between orgasms (usually an hour), given that elevated prolactin levels are associated with erectile dysfunction.

G-spot for men?

Not really, but close to it. Like women, men have extreme erogenous zones. According to a study published in the British Journal of Urology International in 2009, most men rated the lower part of their penis as the most erotic part of the body.

It can literally seem like heroin use

In a 2003 study, a Dutch neuroscientist used a brain scan to study the effects of orgasms on men and women. He found that in men, orgasm activates the ventral tegmental part of the brain. It is part of the brain's 'reward' and causes the release of dopamine, with the same effect that heroin and cocaine have on the brain. In addition to the sense of pleasure, it serves the purpose of evolution. Because reproduction is not possible without ejaculation, biology has ensured that the human species considers ejaculation to be a very rewarding behavior.

Termination without sperm

Medically, an orgasm without secretions is called retrograde ejaculation or, more often, dry orgasm. The sperm goes back into the bladder instead of splashing out of the penis. Although not harmful, retrograde ejaculation is one of the causes of infertility.

There is sex without pleasure

This is rare but possible. Men can experience all the signs of orgasm - muscle contractions and ejaculation - without feeling any pleasure. Medically it is called sexual anhedonia. There are several factors that can cause sexual anhedonia, such as very low testosterone levels, erectile dysfunction due to high blood prolactin levels, multiple sclerosis, and, most commonly, the use of the antidepressant class. These antidepressants can inhibit libido so much that patients are forced to stop after a while.

Do not underestimate small swimmers

If you rely on "coitus interruptus" or penis extraction before ejaculation to prevent unplanned pregnancy, it may be time to rethink your strategy. A 2010 study published in the journal Human Fertility reported that 41% of men had pre-ejaculation or 37% of these sperm were motile. As the man does not have the ability to control or monitor pre-cum, it would be better to switch to another method of contraception.