Spinach can help keep your ticker in top shape thanks to its stores of lutein, folate, potassium, and fiber.
But upping your servings of any veggies is sure to give your heart a boost. The Physicians' Health Study examined more than 15,000 men without heart disease for a period of 12 years. Those who ate at least two-and-a-half servings of vegetables each day cut their risk of heart disease by about 25%, compared with those who didn't eat the veggies. Each additional serving reduced risk by another 17%.