bro, you posted this in 2015 i am reading in 2023 dealing same sitaution and i think due to may be i am also having vercocele if you please saw my message please help me ! i am 18 years old i will be 19 in 2 months
The only danger of prone masturbation is ejaculatory incompetence -- not erectile dysfunction. You can learn to masturbate in the sitting up position.
While doing masturbation in prone position, you are likely to put more pressure at the base of your penis. This can numb the nerve at the base. So you try to masturbate in other position. It is just a question of habit.Be one your back to masturbate.
you need not worry as the above conclusion is not 100% valid as it is controversial. To take care of your sexual status, you may do some exercises if you like. Google, male deer exercise, kegel exercise, Sat kriya, Abdominal breathing twice a day for 10 minutes.
Masturbate with lubricated hands,continue breathing while doing masturbation, empty your bladder before M.I hope these measures will help you to improve your sexual stamina. Best of luck.