The Zone was developed by Dr. Barry Sears in an attempt to stave off a familial predisposition to heart disease. To date it has worked. The concept of the Zone is to monitor and rigidly balance the macronutrient (protein, carbohydrate, & fat) content in our diet to keep the hormonal influences of these substances in check. Based on gender, body composition, and activity level, a specific “block” formula is derived for each individual to simplify the task of balancing macronutrients on a meal by meal basis. Kristy will provide a Zone meal plan to each individual who participates in the Challenge!
Full article: http://library.crossfit.com/free/pdf/CFJ_2015_05_Zone6.pdf