8. Lentils
Lentils are an excellent plant-based protein that can help maintain lean muscle mass, a key factor in supporting a healthy metabolism. They are also high in fiber, keeping you full and encouraging steady digestion. Protein requires more energy to digest compared to fat or carbs, so including lentils in your diet may slightly increase calorie burning. They’re also versatile, working well in soups, curries, or salads.