主要是各种core muscle的strengthening and stretching， especially ab and

such as hip flexor stretch, hampstring stretch; my favorite is 趴在地上，一手尽量向前伸，另一侧的脚尽量向后伸，好像有点牵引的意思。总之是多尝试，小心慢慢来，listen to your own body, your body will tell you which is good for you:-). 少坐多动！