Lentils are a part of the legume family. Other common legumes include peas, chickpeas, beans, soybeans, and peanuts. Lentils are cheap and they pack many vitamins and minerals like folate, manganese, iron, phosphorous, copper, vitamin B1, and potassium. The energy from lentils sticks with you and keeps you satisfied due to its high protein and fiber content. Lentils aren’t complicated to cook, and to save time, you could cook them in bulk for the week and freeze what you don’t end up using.