3 doctors weighed in:

What's the reason of evening erection while there are no sexual stimulation or wet dream?

3 doctors weighed in
2 doctors agree

In brief: REM sleep

Men normally experience 6-8 cycles of rem sleep, and erections will occur during these cycles.

In brief: REM sleep

Men normally experience 6-8 cycles of rem sleep, and erections will occur during these cycles.
Dr. Stephen Chinn
Dr. Stephen Chinn
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