It is a nutritional strategy which carefully uses food in order to generate a hormonal response that allows the body to work to the best of its ability.
In the Zone, calories do not play a primary role. What is more important is the hormonal control achieved through the diet. Barry Sears, the Zone’s creator, has identified a nutritional strategy designed to control the production of a particular category of hormones, eicosanoids, which regulate the body’s functions. The wise combination of foods helps the body reach the optimum equilibrium that allows it to work at its best, and fat is the primary source of energy.
However, this is not just a “nutritional strategy” but a new lifestyle for a healthy life. The nutritional aspects undoubtedly play a fundamental role in this, but physical activity and mental relaxation are also important.