I'm glad you said that DLD. Most people denounce masturbation beforehand or prior to a session in close proximity, though lots and lots of people are having sex after sessions and that never seems to get mentioned at detrimental. The only thing that bothers me is the post masturbation shrinkage - so as soon as I come I do some low intensity jelqing for 5-7 minutes to loosen things up and then I strap on a few golf weights for about an hour. Don't sweat it a bit.