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There was question about what causes "morning wood." It was answered that the erection in the morning is caused by decline of norepinephrine during REM sleep. Which in part allows to prevent uncontrolled urination.

My question is: How does the decline in norepinephrine affect women? They obviously don't get erection.

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Women have erections too! These erections are called clitoral erection. These erections are usually accompanied by vaginal lubrification.

Just like men, the absence of norepinephrine during the REM phase of the sleep causes erections. In women, this phenomenon is called Nocturnal clitoral tumescence while it is called Nocturnal penile tumescence in men. In women, not only the clitoris get engorged with blood but the vagina too.

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OMFG someone's is gonna get a check tomorrow morning :) –  LIUFA Jul 25 at 19:13

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