Wrists, Yoga, and Pain-free Practice
http://j.mp/1YtM5Be
Working With Wrist Pain in Yoga? - Yoganatomy
http://j.mp/1YtLU94
Three Steps to Wrist Safety in Yoga - Ellen Saltonstall
http://j.mp/1ZTHFlI
Ideally you have the four corners of the hands pressing down equally, and an upward lift in the center of the palm. Pressing the fingertips down engages muscles that prevent collapse into the carpal tunnel, so this is very important. In general, bear your weight more forward toward the fingers, and less back toward the wrists.
*手腕的壓力，也包括肩、肘的相對位置
*手腕受力時的posture
