OH boo hoo, can't have sex three times a day, holy crap man, get a job or something. I am 47 if I get sex three times a year its a good year..LMAO. Seriously though, could be circulation issues, family cardiac history, blood flow, or your girl just ain't doing it for you anymore.. Go to a doc make sure all is good,Oh and don't be embarrassed to go to the doctor, he isn't going to touch it or anything, just ask you questions. it's not good having a pencil with no lead at your age..Take and good luck...