People often identify kale, spinach, Swiss chard, beet greens, and collard greens as superfood leafy greens. These foods are rich in vitamins A, C, E, and K, and many B vitamins. Leafy greens also contain an abundance of carotenoids, iron, magnesium, potassium, and calcium.

Eating a plant-based diet, exercising, controlling weight, not smoking, limiting alcohol intake, and getting enough sleep are all pillars of a healthy lifestyle. They're linked to lower risks of chronic disease and a longer life. Many other activities contribute to good health, too.