https://www.buzzsprout.com/1773373/8556974-the-story-of-big-shoulders-crossfit
Your body has 3 main "engines" it uses to create energy. This article discusses those 3 metabolic pathways and what they're used for.
What exactly is CrossFit? In this post Coach Brendan discusses the 3 main components that make CrossFit unique from other workouts.
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