This stretch is also great one. It helped a lot with my daily work. I used my hands a lot so sometimes I get cramps at night so that's why I performed this wrist rotation. I just place my left arm in front of my body in a handshaking position. I slowly rotate my palm upwards until a stretch is felt. Hold for 5 seconds. Slowly rotate my palm downward until a stretch is felt. Hold for 5 seconds. Repeat this 2-3 times and the switch hands.