The reason for morning standing is that in the morning, usually, the bladder is almost full. In order to avoid surprises in the form of a suspended bed, the spinal cord gives the command to contract the muscles in the area of the bladder.

Since the command from the spinal cord (unlike the brain) is not selective, most often the muscle that compresses the vein coming out of the cavernous body is additionally shortened, which causes an erection of the stalk.

Note, guys, that, after writing, the stands slowly decreases (well. this still depends, of course, on the level of sperm toxicosis or vice versa).

In general, with a good girl standing is never a problem!

Please let the people know.
The three biologists :)