is it alright if i were to drink 64oz of milk a day? i no a guy who drinks a gallon of milk a day and he is jacked. is there anything wrong with drinking half a gallon a day? it is 72g protien wich would be a great add to the diet. for a meal replacement meal would a weight gainer, mhp up your mass drank in mid day be ok or a waste of time and money? good food is no option