Today’s workout’s focus is on our fast-twitch muscle fibers.  We have two muscle fiber types in our body,fast and slow twitch and they each play a different role.

Fast twitch are our athletic muscles responsible for quick performance, high speed and a variety of athletic qualities.  They are optimum for muscle growth and tend to drive a high metabolism more than slower, endurance-based slow-twitch (type I fibers).  Working type II fibers increases our strength and can be combined with interval training (like today) to also burn fat…a la the best of both worlds.

Sprints are one of my favorite exercises.  Not because I enjoy them but because they are so damn effective and get great results when mixed into a workout routine.

That one’s for you, Roney!

Enjoy!

-DT

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