Protein can be used to increase metabolism. The body uses more energy to process it than fat or carbohydrates. You can burn up to twice as many calories digesting protein as digesting carbohydrates. Having 28 percent of your calories in your diet coming from protein and reducing carbohydrate intake can burn an extra 150 to 200 calories each day.
When it comes to exercise, eating 1 gram of protein per pound of body weight each day can keep you nitrogen levels high and allow your body to fully recover from workouts faster. It also helps muscle growth and increasing muscle mass can help to burn even more calories.