These include reduced appetite, higher thermic effect of food and automatic calorie control. (hardgainermusclebuilding.com)
Food choices: Select natural, unprocessed foods with high thermic effect (lean proteins like chicken, turkey, egg whites and fish are highly thermic, as are all green vegetables, salad vegetables and other fibrous carbs) (hardgainermusclebuilding.com)
While carbs have a slightly higher thermic effect than fat, the difference is so small as to be meaningless in most cases. (completehumanperformance.com)