After two years of not understanding what is wrong with my wrists, I finally figured it out. It's not my hand position. It's not improper technique. It's not too much force. I clench my fists in my sleep. As far as I know, I do it all night. My girlfriend has verified this and several times I've woken up with them curled up as hard as I could. I was hoping I could find somebody who's had this problem before and successfully fixed it. I have no idea how I would fix this, seeing as I'm asleep when it happens.