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Hammer Nail: Sit in neutral position. Place your forearms on your armrests. Point your thumbs toward the ceiling and make a fist with each hand. Tuck your thumbs into your fists, holding them firmly. Inhale. Exhale and tilt your wrists forward and away from you as though you are hammering a nail. Hold for ten seconds in forward position, continuing to breathe. Repeat five times.
This ergocise stretches the thumb extensors and abductors (tendons that run from your wrist along the top of your thumb and helps prevent DeQuervain's Disease.

Not the stretch you want?