reverse curls are great. and although it seems gay, those little forearm machines you can buy at any walmart. i bought one of those and it has made my forearms grom more in a few months than years of countless wrist curls in the gym. i use it on mon wed and fri before i go to the gym, in combo with reverse curls my forearms have grown like 2 or 3 inches in the last 4 or 5 months bro.