It's all to do with testosterone levels. The more you have, the greater chance you have of landing that knockout blow. Conversely, women are strongly advised to have sex as much as possible before a fight for the same reason. Just ask Ronda Rousey. Muhammad Ali reportedly went two months without sex before a big fight, claiming it made him unbeatable in the ring. All you have to do is look at his professional record to see that he did things right. If the no sex rule applied to Ali, it should apply to everyone else.
It's all to do with testosterone levels. The more you have, the greater chance you have of landing that knockout blow. Conversely, women are strongly advised to have sex as much as possible before a fight for the same reason. Just ask Ronda Rousey. Muhammad Ali reportedly went two months without sex before a big fight, claiming it made him unbeatable in the ring. All you have to do is look at his professional record to see that he did things right. If the no sex rule applied to Ali, it should apply to everyone else.