Spinervals Competition 20.0 - The Sprinting Machine Videos

Product Description

Get ready to sharpen your leg speed and improve your maximum power output by doing this high intensity workout with Coach Troy. Spinervals 20.0 - The Sprinting Machine, will enhance your short burst sprinting abilities by developing those hard-to-reach fast twitch muscle fibers and improving your nervous system response. In this incredibly challenging and effective workout, you'll do a series of short, high intensity sprinting efforts followed by longer rest intervals on a 1:5 work-to-rest ratio designed to optimize your ATP-CP energy system.