OK, let’s have some fun with this interesting topic!
I visited the Doctor for a full physical (53 years old).** I told him I am an avid triathlete, 4 time Ironman, and workout 2x a day 6 days a week, lifetime athlete.** During my active training periods, I notice a fair reduction in sex drive. I took 3 months off (Oct/Nov/Dec) from active training, and noticed my sex drive increased a lot. I got back to training in January, and by Feb (when I visited him), I noticed my drive reduced again. Hmmmm…
I asked him to test my testosterone, thinking I may have low T. It came in at 910! The low is 250 and high is 950. So no low T for me!
I asked him why the reduced drive if my T was high, and he told me this is very common amongst ultra endurance athletes, and triathletes in general, and that he heas heard this many times. Hmmm… He said I should ask my friends if they see the same thing, and he said that he would bet they would. I wont talk to my buddies about this, but in the anonymity of Slowtwitch, what the hell!?! 
So guys, and gals, do any of you experience what I seem to experience? Any Tri Docs have a weigh in on this? Go ahead gang, tell the truth!
TT
I think that this is a form of masturbation that we can’t avoid. Could be the reason for the decreased sex drive.