You will recall the old boxing adage "women weaken legs".
Of course, Willie Pastrano gives the lie to that, as does The Greatest, if we are to believe what we hear and read.
I perused an article, some years ago, which mentioned an informal get together of old boxing trainers, household names in their day, and including among them, Angelo Dundee. The talk came around to the subject of women and boxers, specifically fraternisation before fights.
One of the men present offered a story about Primo Carnera, the Ambling Alp, all 6'6" of him, and heavyweight champ in the 1930s. (You probably saw some of his fights.)
It seems that the big Italian was so concerned about the deleterious effect of women pre-fight, that, and this is apparently true, for some time in the runs-up to his contests, he wore a thick rubber gasket around the base of his male organ. This he, and his trainer, believed would help him resist temptation, and retain strength and aggression.
Angelo Dundee thought for a few seconds and said,
"Carnera could have cut it off, and he still wouldn't have been a fuckin' fighter