The thing with most of these HW fighters ..as in Tyson, Foreman, Liston is that if they don't break your neck with the whiplash it is a very quick and instant kind of punishment . Most of us are going to sleep and then going to wake up with a bad head and a busted nose, lip etc. With some of the lighter guys they are going to cut you to shreds, break a rib or two, bruise your liver, damage your kidney and make you wish you had a glass chin