Hi-

I was reading a few articles online, pertaining to retro-running and wondering a few things.

-First off, what are some of the positive benefits of it?

-Is there any way that it can be harmful?

-Is it lower impact than the more traditional kind of running?

-What muscles does it strengthen?    -Does it work the vastus medialis?

-Have you had an experience with it?

& are there any special concerns with incorporating this into your routine?

Thanks in advance

-Austin