My Wrist Hurts

[straightflush]

I have a cheap optical logitech mouse without a mousepad. The past couple of days after playing for an hour or 2, my wrist starts to get really sore.

Setup: I usually rest my elbow on my arm rest and the heel of my hand on the edge of my desk. I have the mouse sensitivity set fairly high, so I don't move anything but my hand.

What do you do to keep your wrists happy?