I dont believe the above advice. Masturbation is normal and healthy if not habitual.When the time comes you can use a pump if necessary. Also the hand is not always the best for "practice" go get an adult toy like the fleshlight. It could be a blood flow or blood pressure issue. For that see your doctor! Diet and exercise and a limit of toxins should also be looked at. Good Luck!!
MAN, this is the problem i had , quit masterbating , cos its not healthy as ppl say , and i used to watch porn then masterbate , but i still felt weak when i even got married ,so i used natural remedies or herbal .. so quit masterbation that is the sole man.. bye