A full list: * Wear warm clothes that cover your wrists. * Start going to the gym, and focus especially on free weight exercises. They make your arms and hand

A full list: * Wear warm clothes that cover your wrists. * Start going to the gym, and focus especially on free weight exercises. They make your arms and hands stronger, and the growth hormones released after working out promotes healing of any wrist injuries. * Mouse sensitivity. Which is better, low or high DPI varies on a person-to-person basis but for me what worked was low as it forced me to use my hand to do large movements rather than my wrist. * Mouse hardware. Again varies on a person-to-person basis, a mouse that is too large or too small for your hand can cause wrist pain. * Sleep position. Sleeping on your back is probably the safest way, be sure to keep your arms relaxed on the sides. Having a pillow to hug might help as this feels somehow a natural position * Don't play video games with a mouse. Yes this sucks as some of the best competitive multiplayer games are on the PC, but LoL, CSGO, Overwatch etc are known to cause RSI issues and lots of professional players have ruined their wrists permanently. Switching to a console will stop any wrist problems from gaming