However, since fat contains around nine calories per gram a little goes a long way. Great sources include avocado, nuts, natural almond and peanut butter, olive oil-based salad dressings and eggs. #4 - Hydration helps protein synthesis Yes, the old grade-school lesson is important during a diet and bears repeating. Hydration is one of the most important aspects of not only a fat loss diet but to general well-being.