Blunt trauma to the joystick from excessive masturbation and dangerous but exciting sex positions like cow girl and reverse cow girl where the woman is on top have been implicated as a cause of impotence (erectile dysfunction)according to a publication in the Journal of Urology. https://www.sciencedirect.com/journal/the-journal-of-urology
This is probably why many boys need to take Viagra and herbal supplements before seeing their partners.
Let us pls take care of our penile health so as to have a long lasting, ever ready, strong and reliable third leg .