Lentils are really high in dietary fibre. A daily dose of fibre helps to push waste through your digestive system, speeding up your metabolism and keeping your bowel motions regular and healthy. Lentils also have a high source of protein which is great for a meat substitute if you want to live a more plant based diet. They are highly nutritious filled with vital nutrients such as vitamin B, magnesium and zinc. Lentils also have a larger quantity of iron which most vegetarian diets lack.