Why Some People Feel Tired After Sex - Orgasm to exhaustion
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So when sex is over, it's natural for a guy to feel sleepy. Prolactin levels are naturally higher during sleep, and animals injected with the chemical become tired immediately. This suggests a strong link between prolactin and sleep, so it's likely that the hormone's release during. According to one study, more than 60 percent of women have faked an orgasm during intercourse or oral sex. Many of these women were.