Protein is the unsung hero of metabolism boosters. Foods rich in lean protein, such as chicken, turkey, and fish, require more energy to digest, thereby increasing the calorie burn. Add these lean meats into your meals to not only satisfy your taste buds but also give your metabolism a protein-powered boost. For vegetarians seeking lean protein options, a variety of plant-based sources are available. Vegetarians can easily meet their protein needs while enjoying a variety of delicious and healthful meals made using foods like lentils, chickpeas, quinoa, tofu, and Greek yogurt.