In life, some women lack medical knowledge, so they always respond to their husband's sexual advances, and even have sex during menstruation. We would like to warn these female friends that infections caused by sex during menstruation will lead to female infertility.

What are the dangers of having sex during menstruation?

1. Having sex during menstruation will cause congestion of female genitals, leading to increased menstrual flow and prolonged menstruation.

2. During menstruation, the male genitals may bring bacteria into the vagina. Menstrual blood is a good culture medium for bacteria and other microorganisms. Bacteria can easily breed and spread along many tiny wounds and broken small blood vessels in the endometrium, causing infection in the uterus. The membrane may even involve the fallopian tubes and pelvic organs, thus causing unnecessary trouble to the woman.

3. Menstrual secretions entering the male urethra may also cause urethritis.

4. During menstruation, because sperm meet with overflowing blood cells in the damaged endometrium and even enter the blood, it can induce the production of anti-sperm antibodies, leading to immune infertility and infertility.

5. Have sex during menstruation, because the uterus will undergo a series of contractions during sexual impulse

The five best times for sex

1. After waking up in the morning.

The human body mechanism is suitable for having sex in the morning. Sexology experts said: "Not only are testosterone and energy levels highest in the morning, but oxytocin levels increase after sex, which will make the couple bonded throughout the day. Increased dopamine levels make people feel happy." There's something really wonderful about starting a new day with sex.

2. When you feel a little uncomfortable.

It may seem counterintuitive, but research shows that having sex can strengthen your immune system and boost immunity.

Therefore, when you feel slightly unwell, you might as well have sex with your partner and sweat.

3. After the 14th day of the female menstrual cycle.

A new study found that about two weeks after a woman's menstrual cycle begins, her vagina will become 20% larger and become more easily engorged. In this case, women's orgasm is more likely to come. This day is probably the day when women begin to ovulate, so women physically and physiologically crave sex more.

4. After exercise.

You must take advantage of the good opportunity to feel high after exercising, and exercise can make human nature perform better. A study conducted by the University of Texas at Austin in the United States used pornographic materials to compare and analyze the reactions of women after a 20-minute bicycle ride. It was found that blood flow to their reproductive organs increased by 169% after exercise. Moreover, after exercise, the body image is better and people are more confident in their figure, so the suppressed sexual impulse will burst out. Exercise can also secrete more testosterone, which is a very important sex hormone and can make people's desire stronger.

5. After a bad day.

Want to get rid of the stress caused by a busy day at work? Sex is a healthier way to relieve stress than a few beers. "Multiple studies have shown that having sex and other acts of physical intimacy, even holding hands, can significantly improve your mood and reduce stress in the days ahead," says Dr. O'Reilly. In addition, exercising in bed to push away tension and frustration can help People are more passionate and enthusiastic. O'Reilly says that even if your bad mood is caused by your partner, a passionate sex session can help resolve the issues between you.

Recommend some foreplays that can help sexual intercourse

1. Licking and kissing the chin helps sexual intercourse

When kissing, in addition to entangled lips and tongues, few men will kiss a woman's jaw. In fact, it is precisely kissing the chin that can cause pleasure in women. The female jaw and clitoris are closely related.

The ideal way to flirt with this is for the man to suck the woman's upper lip and then lovingly lick her jaw with his tongue.

2. Shaving pubic hair

Sexy razor does not mean that the razor is sexy, but that the razor can make you sexy. Shaving the hair in key areas can stimulate your partner's optic nerves and increase his sexual desire. According to the survey, about 38% of women between the ages of 18 and 28 shave their pubic hair beyond the bikini area, and 13% of them even shave it all. Among men, the proportion is 40%.

3. Sexual fantasy helps sex

Sexual fantasies are a very normal phenomenon, and both men and women will have moderate sexual fantasies. Imagining romantic scenes and imagining passion is a physiological reaction. If you imagine lingering scenes in your mind, your body will respond accordingly. Before you start having sex, you can start to use sexual fantasies to help your sex and warm up your passion.

4. Sexual intercourse reservation helps

Booking sex in advance can give your lover something to look forward to throughout the day. In the morning before your lover goes to work, whisper in his ear and tell him your plans for that night. The direct effect of this is that he will remember your whispers all day long; the indirect effect is that you will also look forward to the arrival of the night.