I was helping a young man prepare for his first international contest, the NABBA Mr. World. One day he told me that one of his secrets of maintaining a high testosterone level was abstinence, complete and utter abstinence: no sex with a partner, self-service or nocturnal emissions allowed. Although 20 years his senior and knowing better, I said nothing, not wanting to upset him so close to his show. A few days later I was urging him on through a grueling set of high-rep, below-parallel squats when he moaned: "Oh God! Oh no, it can't be...quick, take the bar!" There he stood bugeyed and bright red. He'd had an orgasm on the last rep.
-Musclemag No. 199, Jan 1999