the things i see is most fighters will waste so much energy when fighting. i see all kinds of slipping punches that arent even there and wiggling of the arms, randomly bouncing around the ring: this kind of thing does have a price and you will start to feel it sooner or later no matter how conditioned you are. look at joe louis and notice how much energy he wastes. the answer is none. people like to say he moves around like a stiff zombie but he really is just being economical. in this way, joe could probably box 70 rounds straight since he is so smooth out there.

my point is, the style in which you guys box with these days is the cause of your stamina problems. your style uses up so much energy in order to pull off that you absolutely have to excerise like a triathlete. i tend to just stand in front of my opponent, not bouncing, not shaking, selecting my punches and specfic defensive reactions carefully. sure i look boring (thats what im told) but i can go longer than most and think with more clarity since im not occupying my mind with all kinds of crazy movements for my body.