Does Sex Before Competition Hurt Your Efficiency? The fact that intercourse before competition might have a negative effect on performance has, rightly or wrongly, been held for a long time. Also the boxing legend Muhammad Ali had been thought to have abstained from intercourse for weeks before a fight. Among coaches of group recreations, it is an unwritten guideline that their players should try to avoid sexual activity before big tournaments. There are more athletes, but, who swear by sexual…