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These devices can measure the blood flow and neuron activity in the brain. By studying the brain activity of people having orgasms in these machines, scientists have learned some pretty amazing stuff. There's a reason why people tend to feel bolder and less inhibited during sex — the part of your brain in charge of your logical reasoning skills temporarily goes on vacation. This is the part of the brain that is responsible for reason, decision making, and value judgments. This shutdown of the lateral orbitofrontal cortex actually makes sense, as fear and anxiety can interrupt arousal and lead to problems like performance anxiety. Multiple spatially remote parts of your brain are involved in having an orgasm.

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More sex is the secret to a longer, healthier life

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Why Do Guys Get Sleepy After Sex? | Live Science

Sex can elicit a roller coaster of emotions, so much so it's oftentimes confusing what's actually going on— in both your body and your brain. Whether it's casual, committed, or somewhere in-between, you're always going to feel something. Even if it's just I want to have sex more. What's interesting, though, is those feelings can oftentimes be traced back to biology and brain chemistry. And it makes sense. Getting in touch with your body allows for a more comfortable and freeing experience—you'll be able to better understand how you feel , what you like, and how to ask for it. It'll open up communication between you and your partner and better serve your needs—in the long run—both emotionally and physically.
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Why Do Guys Get Sleepy After Sex?

For many women, the correlation between sex and snoring is one of those annoying facts of life: no matter when passionate encounters occur, men always seem to fall asleep immediately afterwards. So in lieu of a cure, a better explanation will have to do. Although women sometimes feel sleepy after sex, the phenomenon does seem more pronounced in men. What is it, then, that spirals them into the land of nod?
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Oxytocin has been best known for its roles in female reproduction. It is released in large amounts during labor, and after stimulation of the nipples. It is a facilitator for childbirth and breastfeeding.
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