Another interesting theory is that pitching a tent prevents men from wetting the bed. There are two main types of erections: psychogenic and reflex. The former starts with stimulating thoughts or images which trigger an erection via nerve signals. The latter is an involuntary process that occurs without sexy thoughts and it’s believed that a full bladder can trigger them. The nerves controlling these reflex erections are located in the sacral nerves of the spinal cord which are also stimulated by a full bladder. Since it’s difficult to pee with a stiffy, it’s thought that NPT may prevent accidental nocturnal enuresis (bed wetting). While this may sound plausible, it seems unlikely because the body has lots of other methods to prevent you from wetting the bed. Furthermore, it doesn’t really make sense given that nocturnal enuresis also affects women.
It seems the most likely explanation is that all of that nighttime mischief is really helping to keep your crown jewels healthy. Be pleased he’s looking out for you.