Do you do a lot of heel striking?
所有跟帖:
• Have you paid much attention to your running form? -7grizzly- ♀ (0 bytes) () 11/13/2014 postreply 10:51:40
• Have you paid much attention to your running form? -7grizzly- ♀ (0 bytes) () 11/13/2014 postreply 10:51:40