This document provides 10 core nutrition tips for fat loss and muscle gain. It recommends staying hydrated to prevent fat storage, eating smaller meals more often to maintain metabolism, and making breakfast the most important meal to prevent muscle breakdown. It also discusses the importance of getting sufficient protein, combining carbohydrates with protein or fat, including healthy fats in the diet, stopping fasting in the evenings, and taking the right pre- and post-workout fuel to support muscle growth and recovery. The document emphasizes that achieving a lean physique requires a long-term commitment to proper training and nutrition rather than unrealistic expectations of quick results.