跑步哥英语描述他跑步的故事英语(拼音：yǔ)作文？

描述他跑步的故事英语作文？Running is a whole body movement， which enables the body#30"s muscles rhythmic contraction and relaxation

描述他跑步的故事英语作文？

Running is a whole body movement， which enables the body#30"s muscles rhythmic contraction and relaxation， so that muscle fiber

　　Skeleton is the body of the stent， human activities leverage.

　　Step can improve blood circulation， increase the supply of nutrients in bone cells increase bone cell growth capacity， from the

　　And to promote the normal development of the bone.

　　Persist in running can enhance metabolism， delayed bone