text: whats the easiest way to gain weight? my metabolism is a beast from hell!! i can eat anything, and never gain a pound. its really fustrating. how can i easily gain weight without having to over do myself? go to the vitamin store like gnc. there are actually  huge amounts of protein & weight gain products sold there. bodybuilders use them to "bulk" up. mix the stuff up with bananas, ice cream, and yogurt...other fruits too. makes a great smoothie....and put good healthy weight on you. always eat your protien too!