Close-up images of subjects using a rearfoot strike (A) and a midfoot strike (B).

February 2, 2013 by
Filed under:  

Close-up images of subjects using a rearfoot strike (A) and a midfoot strike (B).

Close-up images of subjects using a rearfoot strike (A) and a midfoot strike (B).

Comments

Tell me what you're thinking...
and oh, if you want a pic to show with your comment, go get a gravatar!