Back when the relationship was young we'd do 4-5 times in a 24 hr period on several occasions. Now 3-4 times a week, and ill jack offmost other days. Guess I'm just glad at our age (mid 50s)we still doing it that much. Now if we are traveling, we usually do it at least once a day still
When I was an eighteen year old student I would say that there were many consecutive days when 4-6 times in a 24 hour period wasn't unusual. We had a great place, plenty of food by the bed, and a bathroom off the bedroom. We could easily be in bed eating, sleeping, and fucking for a week. It was basically waking up and fucking, then sleeping and snacking, day after day.
I think that with the right guy and environment any fit 18 - 25 year old could do that at least. It was at the time I would also challenge friends to cum on the hour every hour if we were on holidays. Many of us could do that for around 12 hours. Massive amounts of lube need to be available to prevent chaffing, lol.
The one thing is that you have to be with someone who consistently makes your cock hard anytime it goes near his ass, and someone you never get bored of fucking or generally being with - that's probably the hardest part: reliable chemistry with the right guy or guys.
When you are having fun with the right people, with no worries or hang ups, (and the right environment), the fit human body is capable of far more than we might expect. Work and family obligations seriously limit our sexual lives.
My main reason for coming out early was so that I made the most of being in my sexual prime, I was very aware of that in the lead up to that time. I was taught by at least one closeted old ugly pedophile and was determined I was not going to lead that life.
I have perfectionist tendencies: ambition, persistence, repetition of good physical technique, and a love of what I do, as well a sense of rhythm were instilled in me at an early age. Those early music lessons weren't wasted.