> Boxing does it with weight classes, why can't we do it with everything? I've often heard that women (in general) have ~5% more body fat percentage than males

> Boxing does it with weight classes, why can't we do it with everything? I've often heard that women (in general) have ~5% more body fat percentage than males, because of how their body work. That means that if you have two 100kg people in optimal conditions, a man and a woman, the man would have on average 5kg of muscle more than the woman. This is a HUGE difference and wouldn't make for fair fights.