Usually, once a day before I go to bed. I've done no porn before for a full year (including no jerking off either) and honestly, it made no difference. When you're single and not looking you might as well just jerk off and watch porn. If you're out and about looking for women, I'd recommend against it just because the sex is better when you don't jerk off so much. When I was jerking off daily and still fucking women in one-night-stands, I'd have to drop cialis to get hard even for the hottest of chicks because I was just so numb to any feeling both emotionally and physically that I could barely stay hard or get any enjoyment out of it. That's less to do with porn though and more to do with just the superficiality of one-night stands. The whole dating environment was just too emotionally void of anything good that I stopped dating and going out to find women altogether. I haven't bothered for almost 2 years now. Porn and jerking off makes 0 difference if you aren't out trying to find women.