注意姿勢。買一個wrist brace, walmart 都有:
http://www.walmart.com/c/kp/wrist-braces
http://www.amazon.com/Mueller-Fitted-Right-Wrist-medium/dp/B002NLGNW8/ref=sr_1_1?ie=UTF8&qid=1421050035&sr=8-1&keywords=wrist+brace
http://www.walmart.com/c/kp/wrist-braces
http://www.amazon.com/Mueller-Fitted-Right-Wrist-medium/dp/B002NLGNW8/ref=sr_1_1?ie=UTF8&qid=1421050035&sr=8-1&keywords=wrist+brace