ya i understand it , but my main concern is the SUPPLEMENT side effect in long term because you do not know what the ingredients they use, and i've met some hard gainer out there their daily dietary is packed with different types of supplement with the main food like morning whey+bcaa, afternoon whey, pre-workout creatine + preworkout supplement, post workout whey, before bed Casein and ETC. i am quite worry about that if the supplement which will bring hazards to our body. hopefully my question above is clear to everyone. not discussing about supplement replacing main sources of food.