It would make sense that eating less would help you lose weight, but you should never skip meals, especially the first meal of the day. Eating breakfast jump-starts your metabolism, regulates your blood sugar levels, and gives you energy until lunch. Make sure your breakfast choice is high in protein and fiber to fill you up and eliminate the need for an M&M mid-morning snack. Greek yogurt with fruit and nuts is always a great option, but here are some other tasty 300-calorie options. If you're short on time in the morning, make these the night before.