I have read multiple articles in fitness/bodybuilding magazines that say you can only absorb so much protein in one sitting. I have read everything from 20g to 1g per 20lbs of bodyweight. Anyway, if this is true then why do some of these shakes contain like 60g of protein? The articles I have read indicate excess protein just gets passed out as waste. Furthermore, when a MMA fighter is trying to make a specific weight, how can he afford to take in the 500 calories for this 60g of protein 2 or 3 times a day?