Egg Whites

When it comes to a belly-flattening protein, nothing beats egg whites! With only 17 calories each and an impressive four grams of filling protein, egg whites — try them hard-boiled, scrambled, or in an omelet with veggies — make the perfect slimming morning meal. Plus, studies show that eating a protein-rich breakfast can help curb appetite later in the day and boost weight-loss efforts. Leaner abs are on the way!