China's sex education is very backward, and many people want to learn professional knowledge, but knowledge is not professional, get a lot of friends on the Internet as a bad sexual knowledge, and psychological distress, in fact, the most common is the knowledge about masturbation, many articles that masturbation is vile and for the people, which leads to a lot of friends because of masturbation and appear the anxiety and depression. In fact, proper masturbation is harmless to the body, and has a positive effect on physical and mental health, can very good release their sexual repression and sexual needs. Thus, it is very important to know the right knowledge. Q channel under the psychological network take everyone to have a look at home and abroad to study some professional knowledge.

1. Always change sex partners will shorten life

A French study found, with multiple sexual partners or changed often, will speed up the aging, let the life expectancy of 4.7 years old. Often because change partners may do harm to heart health, bad for blood pressure stability.

2. 15 minutes after the sex best communication effect.

Research shows that 15 minutes after sex, men and women were highest and tolerance of each other, seize the opportunity to communicate with him (her), many problems will be readily solved. If marriage and what is the misunderstanding between lovers need to communicate with, so suggest that sex again after 15 minutes.

3. 1 h after sex should not be physical and mental work

Sex suppresses logical brain regions activated, speed up the lower body blood circulation, temporarily let the brain ischemia, logical ability and the ability to solve the problem, so sex rest for 1 hour and then deal with other things.

4. 6 and 7 in the morning, a man the most sensitive body.

Sexologist kumar, he rana study found that 6-7 o 'clock in the morning, male body is most sensitive, sexual desire is stronger. Because after a night's rest, fatigue was restored, and more energetic. At the same time, male male hormones in the body, degree of erectile more solid, durable. In psychological relatively relaxed, for their sexual ability is also more confident. So, wake up in the morning, and a lover tenderness is a good choice.

5. 8 p.m., male human ability the most unstable.

Is a man at 8 PM male hormone fluctuations the biggest moment of the day, he will feel tired at this time, reduced libido. If choose sex at this time, nine times out of ten will play.

6. At 10 o 'clock at night, the woman most likely to produce sexual fantasies.

Harvard University school of medicine, experts found that around 10 o 'clock in the evening, the most active and creative cells of the female brain as they are good at imagination, and the content of the fantasy mostly related to "sex", "love". So, the man had better go to bed before 10 o 'clock, share the passion with her.