Erections

Erections. They’re more complicated then they seem. The mind and body must work in perfect harmony to release hormones in demand, send six times more blood to the penis and allow the nervous system to send its signals. .
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Penises are born ready for erections. It is common for babies to be delivered with erections and erections have even been noticed during in-utero ultrasounds, typically during rem-sleep.
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During a full nights sleep, a man has on average 3-5 erections lasting 25-35 minutes, also typically during rem sleep. This is typically a good way to tell if any erectile difficulties are due to physical or psychological causes, as the body is working automatically versus consciously. .
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There are also three types of erections: reflexogenic (when touched), psychogenic (thoughts, porn, fantasy) and nocturnal as mentioned above.