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

such as hip flexor stretch, hampstring stretch; my favorite is 趴在地上，一手盡量向前伸，另一側的腳盡量向後伸，好像有點牽引的意思。總之是多嚐試，小心慢慢來，listen to your own body, your body will tell you which is good for you:-). 少坐多動！