Originally Posted by Bill1234
Light weight, high reps can be helpful, but only using your own bodyweight can help ensure your don't get more bulky than your body frame can handle without suffering the consequences that Hasim Rahman and Frank Bruno suffered from being too muscular.
All the weight lifting in the world won't build any muscle unless the weight lifter is eating extra calories to fuel that muscle growth (unless steroids are involved).
A boxer could lift tons of weight and not gain any muscle mass if they were eating a substandard amount of calories.
I'm sure Rahman and Bruno (and also Briggs) were eating to fuel their muscle growth.