Wow, here I thought at 10 minutes I had broken the record of senior Olympics....
However I now and then surprise myself that at the age of 70, I can still have one of those full-throated, pun unintended, hitting the bull eye orgasm that rival those of my younger days. It doesn't happen that often, actually quite rare, but when the stars are aligned, it shoots straight! One thing I notice is that if I was under the weather or out of sort, it would just ooze - sorry guys for the visuals - and I thought oh no, the end is here. Well it's not. Another thing is that your brain has to be on the deck of the Enterprise, make sure all the synapses do their job in the right sequence and in a timely manner to finally, when the time ehr, comes, flip the switch.
In short it takes good mental focus and a healthy body. Too much substance usage might have dulled the mind along the years. I remember at the peak of my physical being, say in my 30s, not only I hit the bull eye but I also felt some sort of smoke coming off the top of my head - ie feeling real high - like a locomotive. That was the best part , that lead to the post-coitus "lovey" interlude, where in the cinema, both partners reach for their cigarette...