well if it was 100% in my head, there would be no SCIENCE about it.
Id just tell others to not do it if they have the willpower to avoid it. You can plow 99% of the women in the the hobby and have 90 different women per year if you can finish in a bag in under 10 minutes.
I miss the days where I could go into a strip club and get off in the lapdance room in 5 minutes and walk out. Basically now the ONLY thing that works for me is the AMP HJ and even that takes 20 minutes
dopamine is a neurotransmitter, its literally 100% in your head. lol.
but seriously, the dopamine increase is because of how you mentally approach the subject. you get excited by the "deviant" acts, and now you are dependant upon that kick for your dopamine spike. I cum just as fast with our without a condom (which throughout my life has never been fast) there are only a handful of providers that I have thought about BBFS with, anyone else I wouldn't touch with a barge pole (false level of security there, I am aware) I envy you that at some point in your life you could get off in only ten minutes, damn, its taken me at least 30 minutes full on masturbation even when I was 14. it doesn't help if I abstain either! if I'm tired? forget about it, I'm going to take at least an hour with the hottest women on the planet!
it may sound contrite, but the quickest I ever fished is with women that I was actually deeply in love with. why? because that love increased the dopamine levels. this is why I need to DFK, it at least gives some of the same dopamine reaction