Eat more Kale! Everybody is doing it. This superfood has been around since Roman days. It is literally supercharged with vitamins and minerals including A, K, B6 and C, calcium, potassium, copper and manganese. Pound for pound it's probably the most nutritious vegetable in the garden, and it can be prepared in so may ways: steamed, sautéed, juiced or in a smoothie, and even as crispy kale chips.