i'm checking out gnc for weight gainers... and... any specific brand I should buy or is it all the same? i'm 5'4" 115lb.. and yea, i'm pretty damn small and skimpy so I kinda do need to bulk up.. any tips for the small guy? btw am I suppose to drink this before or after work out? oh i'm just reading one of these labels.. "Mix 3 rounded scoops to 24 fl. oz. of cold water " thats 3 cups of liquid!! are they serious about drinking this all at one time?