I was at my local supplement shop here in montreal, and i was looking for the whey protein brand i usualy take and the guy that works there comes along and ask me what im looking for... I tell him, whey protein X brand. he ask me if its to gain mass, i tell him yeah, he immediately proceed to tell me that its not good and i should take this "Mass Gainer" because its for mass... i look at the stuff and its a mix of carbs proteins and fat ... So i say, no i get my calories elsewhere i only want protein, then he gives me a ugly look and tells me its not the same, i should try the other thing because its good for me i just have take one shake after working out, i then ask him if i can take it before also and he tells me no never take shakes before working out, i tell him ive always done that 15-25 mins before going to the gym and he says its not good, and also tells me that anyways ure body cant absorb more than 30g of protein every 2-3hours so thats why only take it after gym... Thats when i decided the conversation should end so i just took my protein paid and left... The problem is that i was with my friend, and he thinks that everything that guy told us is true... he bought the weight gainer... i said he still should take a preworkout shake and that he still can have more than 30g of protein, but he is kind of skeptical because after all the guy was a "professional" and he must know better than me.