In 2009, psychiatrist Richard Friedman tested his theory that the post-sex blues was just the amygdala, which normally masks fear and anxiety during sex, creating a temporary depression when the levels return to normal after the deed.

“The real answer is, nobody really knows,” says Seth Cohen, MD, a urologist with NYU Langone Health in New York City. “There’s minimal research that says ejaculating ten times a week is better than ejaculating once a week, and 20 is better than that, but these studies have never been validated.”

When you orgasm, the brain releases a cocktail of neurochemicals that make you tired. “During sex, the brain releases oxytocin which heightens arousal and excitement,” Laino told INSIDER. “But when it wears off, it can leave people feeling really tired.”

One study surveyed sex therapists — specifically regarding how long vaginal intercourse should last before ejaculation — and concluded that one to two minutes was “too short,” three to seven minutes was “adequate,” seven to 13 minutes was “desirable,” and anything from 10 to 30 minutes was considered too long.

No worries — sperm that aren’t ejaculated simply get reabsorbed into your body, or ejaculated out of your body during a nocturnal emission. You may think of “wet dreams” as something that happens when you’re a teenager. They can happen at any time during your life.

The chances of getting pregnant from pre-cum are pretty low — but it is possible. Pre-cum (also known as pre-ejaculate) is a small amount of fluid that comes out of your penis when you’re turned on, but before you ejaculate (cum). Oozing pre-cum is involuntary — you can’t control when it comes out.

Sperm needs to come into contact with the vagina for pregnancy to occur. Fingering is very unlikely to introduce sperm to the vagina and cause pregnancy, but it can happen. Fingering can only cause pregnancy if a person’s fingers are covered in preejaculate or ejaculate when they insert them into the vagina.

Nope. You cannot get pregnant from oral or anal sex. When an egg is released from the ovary, it travels through the fallopian tube to the uterus.

People who are born male and living as men cannot get pregnant. A transgender man or nonbinary person may be able to, however. It is only possible for a person to be pregnant if they have a uterus.

YES – Although it is extremely unlikely that a woman could get pregnant from a toilet seat, the possibility exists. Sperm is alive as long as it is moist. Once it dries up, it is no longer a threat. Anytime live sperm comes in contact with the vagina there is a chance pregnancy could occur.

No, you cannot get pregnant from just kissing someone. Pregnancy can only occur if sperm is ejaculated in or near the vagina.

“Kissing is great if you have a headache or menstrual cramps,” says Demirjian. You may be inclined to wave away advances when you’re curled into an achy ball, but the blood-vessel dilation brought on by a good long smooching session can really help ease your pain.

Kissing causes a chemical reaction in your brain, including a burst of the hormone oxytocin. It’s often referred to as the “love hormone,” because it stirs up feelings of affection and attachment.

Saliva carries minuscule traces of the virus, but this isn’t considered harmful. Saliva contains enzymes that break down the virus before it has a chance to spread. Kissing, even “French” or open-mouth kissing, won’t transmit HIV.

Although kissing is considered to be low-risk when compared to intercourse and oral sex, it’s possible for kissing to transmit CMV, herpes, and syphilis. CMV can be present in saliva, and herpes and syphilis can be transmitted through skin-to-skin contact, particularly at times when sores are present.

Kissing can transmit many germs, including those that cause cold sores, glandular fever and tooth decay. Saliva can transmit various diseases, which means that kissing is a small but significant health risk. It’s not all doom and gloom. Research into passionate kissing has uncovered many valuable health benefits.

The effect of dilated blood vessels and increased blood flow can help relieve cramps — a boost in feel-good chemicals and relief from period cramps? Getting your smooch on when you’re in the throes of a bad period might just be worth it.

2007; Wlodarski and Dunbar 2013). The results of the current study synthesize these findings by showing that attitudes towards romantic kissing vary across the menstrual cycle and are significantly associated with the fluctuation of menstrual hormones.

Encourage her to stay active. Regular exercise and stretching will help ease her cramps. Suggest that she lie down and gently rub her abdomen to help relax the muscles. Ask her doctor for a recommendation of herbal remedies or medicines that may relieve symptoms.

The Benefits of Kissing Locking lips with a loved one can bring some pretty great health benefits. Kissing has been shown to lower you blood pressure, burn some extra calories (up to 16 calories per kiss), reduce the pain from cramps or a headache and boost the chemicals in your brain that make you feel happy.

During a kiss, this lip sensitivity causes our brain to create a chemical cocktail that can give us a natural high. The dopamine released during a kiss can stimulate the same area of the brain activated by heroin and cocaine. As a result, we experience feelings of euphoria and addictive behaviour.

Start the kiss with slow, gentle, and light pressure. A single, soft kiss is simple and sweet, and it’s easy to build it up. Want to stretch it out longer? Try varying pressure slightly, or shifting your focus from their top lip to the bottom lip.

when you kiss your partner passionately, not only do you exchange bacteria and mucus, you also impart some of your genetic code. No matter how fleeting the encounter, the DNA will hang around in their mouth for at least an hour.