A nocturnal emission , informally known as a wet dream , sex dream , nightfall or sleep orgasm , is a spontaneous orgasm during sleep that includes ejaculation for a male, or vaginal wetness or an orgasm or both for a female. Nocturnal emissions are most common during adolescence and early young adult years, but they may happen any time after puberty. It is possible for men to wake up during a wet dream or simply to sleep through it, but for women, some researchers have added the requirement that she should also awaken during the orgasm and perceive that the orgasm happened before it counts as a wet dream. Vaginal lubrication alone does not mean that the woman has had an orgasm. Due to the difficulty in collecting ejaculate produced during nocturnal emissions, relatively few studies have examined its composition. The frequency of nocturnal emissions is highly variable.


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Does Sex Help You Sleep?



5 Reasons Why You Sleep Better After Sex, According To Science
All of Healthily's articles undergo medical safety checks to verify that the information is medically safe. View more details in our safety page , or read our editorial policy. Sexual activity can have a positive impact on both your sex life and sleep. It can help release stress , increase intimacy, boost feelings of wellbeing and calm your mind, making it easier to switch off to go to sleep and stay asleep.


5 Reasons Why You Sleep Better After Sex, According To Science
It can seem like a bit of a conundrum: It's late, you're cozy in bed, and the mood strikes. To have sex or not to have sex? That is the question. You're nearly half asleep, so will getting all revved up make it harder for you to fall asleep afterwards? In fact, quite the contrary: getting it on can help you fall asleep and stay asleep.




Research suggests orgasms can do more than make you feel good — they may also help you sleep better. While you may have already figured this out yourself, you might not know that the benefit is a two-way street; quality sleep may also help you orgasm whereas poor sleep can do the opposite. As you might imagine, conducting studies on whether orgasms help people sleep is challenging, said Michele Lastella, a sleep researcher and senior lecturer at the Appleton Institute for Behavioral Science at CQUniversity Adelaide in Australia. Most studies on orgasms and sleep are based on self-reported surveys that tend to underrepresent LGBTQ people and their experiences. In the study, researchers conducted polysomnographic recordings — the gold standard for sleep research that measures brain waves, blood oxygen levels, heart and breathing rates, as well as eye and leg movements — on five men and five women following masturbation with and without orgasm.