If you want to perform optimally in a Spartan Race, Tough Mudder or any Running event for that matter; it’s important that you address the WAY you run before you concern yourself with HOW MUCH you run. There is quite a bit of confusion that exists in relation to running stride frequency vs. heart rate. It seems for many to attain a desired higher cadence can only come with a greater less efficient cost of work. Coach Diaz has asked his wing man Miguel Medina to join him as he attempts to shed light on proper running mechanics and unravel the cadence/heart rate frustration.