So the average duration for sex is somewhere between 5 and 15 minutes (including foreplay). Actual sex without foreplay is like 5 minutes. I'm not sure if PMO "sessions" should be considered just sex sessions or sex sessions with foreplay but i noticed that in my case and i assume in other cases as well PMO sessions last much, much longer. And i'm pretty sure it's not ok. We have way more control over ejaculation and edging is virtually unlimited (and not healthy). I've personally had sessions in which i edged so much the orgasm didn't even matter, i was exhausted by that time. I consider these sessions as "binge", even if technically a binge describes multiple ejaculations. In my opinion it's a binge because it shares the same characteristics: we aim for much more pleasure and we can't stop. In my case i noticed that a session lasts, on average, at the very least 30 minutes but usually up to 1 hour. I've had some sessions that lasted up to 4 hours... wtf. This can't be healthy we're not biologically supposed to bathe in this type of arousal and pleasure for so long and have so much control over it. Physically we would just not be able to have sex for so long unless we were top tier athletes. Actual sex is actually exhausting, masturbation is not exhausting at all. Not that I consider masturbation healthy, cause i don't, but the reasoning of "just rubbing one out" is invalidated when one masturbates for more than 5 minutes. "Rubbing one out" would imply one just needs to ejaculate (which would be possible in a couple of minutes top)s, but usually the PMO session is about pleasure and is very prolonged.