Sep 15, 2011 by Tatianna
I found this great poster with a complete guide to interval training. I thought it was brilliant way to describe interval training and how it works. This will be very useful to beginners as well as advanced trainees.
Sep 15, 2011 by Tatianna
I found this great poster with a complete guide to interval training. I thought it was brilliant way to describe interval training and how it works. This will be very useful to beginners as well as advanced trainees.
