What should you do if you want to become leaner in Zone?

• A. Increase carbohydrates
• B. Increase protein
• C. Lower fat intake
• D. Decrease carbohydrates

Answer: (C)

In the Zone approach, becoming leaner relies on creating a modest energy deficit while preserving lean mass, and this is best achieved by trimming fat intake. Fat is the most calorie-dense macronutrient (9 kcal per gram), so reducing fat lowers total daily calories without necessarily dropping protein, which helps protect muscle during fat loss. By maintaining adequate protein and balancing the remaining calories between carbohydrates and fats, you can lean out more efficiently.

Increasing carbohydrates can raise the insulin response and total calories, potentially hindering fat loss. Increasing protein helps preserve muscle but doesn’t automatically create the necessary energy deficit. Decreasing carbohydrates also lowers calories, but in the Zone framework the emphasis is on keeping fat moderately controlled and protein steady to support lean mass, making lowering fat the most effective option for leaning out.