This is fairly well known phenomena amongst professional wrestlers. There are even t-shirts made that joke about it. Not sure the exact reason, maybe something

This is fairly well known phenomena amongst professional wrestlers. There are even t-shirts made that joke about it. Not sure the exact reason, maybe something to do with the brain turning off pleasure / pain receptors? Achieving an orgasm will sometimes just not happen unless you exert a huge amount of focus and concentration. I had done some informal surveys with people who take the same sort of pounding on their bodies: stunt people, professional football and hockey players, UFC fighters. But none have admitted to having the same issue.