Add Protein

Increase your protein intake to rev your metabolism. The body has to work harder to process it because it contains nitrogen, which is metabolically expensive. But eating too much protein can make you feel tired because your body is using its energy to digest.

Generally RDA dietary requirements include 0.4 grams of protein for every pound of body weight. For a 140-pound woman, that's 56g. Adding an extra 30g of protein to your diet, which will make your body work harder and burn more calories. You could add a half-cup of cottage cheese (15g) and 8 ounces of low-fat yogurt (11g), or 8 ounces of skim milk (8g) and 3 ounces of tuna (22g).