For years now I've been talking about the benefits of Sprint training, How it ups your cardio-pulmonary strength, recovery ability, and reserve capacity. How it builds muscle, power, speed, and explosiveness while also burning body fat. And of course, it's positive effects on your hormones, how it helps to optimize your levels. But, a picture sometimes speaks it so much better. I know this picture has been around for a little while, if I'm correct I believe I first saw it in a Crossfit Journal.
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