我看了这些录像，他们和我的physical therapist's demo差不多。在那里上课2小时。
我是每天早晚做2次。感觉很有帮助。同时我还加一些动作，请看link。最近好些。
http://www.spine-health.com/wellness/exercise/stretching-back-pain-relief
http://www.spine-health.com/wellness/exercise/specific-hamstring-stretches-back-pain-relief
http://www.spine-health.com/wellness/exercise/videos
谢谢
