I know that I do 5 shakes a day, along with 3 meals of meat totalling 275g of protein a day and I'm losing weight, and still gaining muscle. but then again I'm 280 pounds. basically if they aren't working out I believe the proper ratio is 1g to every kilo of lbm. pound to kilo = 2.2lb=1 kilo...i've heard people doing up to 2.5g of day to their lbm tho. so I'm not 100% sure, all I know is 275g and I'm still doing great!