• The CrossFit Journal
• "What is Fitness?"
• Understanding CrossFit
• "Foundations"
• The Zone
• Mastering the Zone
• Toxic Fat
• Mobility Wod

• CrossFit Journal Article #15 - Avoiding Metabolic Derangement
• CrossFit Journal Article #21 - Zone Meal Plans
• Zone Block Reference Chart

• CrossFit.com - Exercises & Demos

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