I have very weak wrists. The rest of my arm is decent but my weak point is the wrists. On my last set of hammer curls, they completely gave out and one is completely in pain now (wont be able to do curls, etc for a few weeks). How can I strengthen my wrists? I already do reverse and forward wrist curls. Should I simply start upping my calcium intake? They are very very skinny and look disproportionate to the rest of my arm. They are my weak point preventing me from pushing more weight.