i actually discovered using pineapples when i was doing a pineapple parasite fast,where you only eat pineapples.i discovered that i became super pumped those entire 10 days! as i worked out , i began using it again post workout and it works great.Though ,not as powerfull as pure maltodextrin or one of those high cal weight gainers- but it still works great.also,Pineapple is a SUPER PROTEIN DIGESTANT,it literly obliterates EVERYTHING in its path!