Building stability is the foundation to proper movement and injury prevention. In the sport of obstacle course racing, we face an extreme amount of stress to the ankle, especially in dealing with elevation and technical terrain.
Sarah Pozdol, founder of OCRTraining.com (and NASM CPT & YES, Spartan SGX & SOS and much more)  provides some simple things that you can add to your training regimen in the future! 
Series NavigationTraining Tuesday: Total Body Stability Superset Workout >>