Lauded for centuries as an aphrodisiac, this fiber-rich plant contains more bone-building magnesium and potassium than any other vegetable. Its leaves are also rich in flavonoids and polyphenols-antioxidants
that can cut the risk of stroke-and vitamin C, which helps maintain the immune system. “Eat them as often as you can,” says Bowerman. Ripe ones feel heavy for their size and squeak when squeezed.