A member asked:

Why do men wake up with an erection?

A doctor has provided 1 answer

Normal Mechanism: Morning erection is just one of several erections a male can have during rem sleep. On average, a male can have 4-5 erections per night with each episode lasting around 20-30 minutes. This type of erection is referred as spontaneous erection. The erection process also occurs to supply oxygenated blood to the penis during the night. During the day, erections are man controlled.

Answered 10/20/2017

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