Thumb & wrist
Keeping your hands in the same position for long periods of time can cause pain and swelling. Thumbs "stick," joints stiffen, and repetitive use of the wrist can lead to carpal tunnel syndrome.
The remedy?
Keep wrists and hands in a netural position (a 30- to 45-degree angle with fingers curled) and avoid gripping or overflexing your hands when using the device
Stretch it!
With your forearm parallel to your chest, gently grasp the fingers of one hand and push back until you feel a slight tension. Repeat for the other hand.