Ground flax seeds may be popular with the health-food set, but as an add-in to yogurt and oatmeal, they aren't the most healthful. "Why would you use flax when you can use chia?" Turner says. Chia has double the amount of heart-healthy omega-3 fat, nearly twice the fiber, and even slightly more protein than ground flax. Better still, you don't have to grind chia seeds, says Turner – unlike flax, they can be digested whole. Chia is also a neutral flavor. "If I'm going to be pouring this stuff in my oatmeal, I don't want it to taste like a flax," Turner concludes. Don't like chia? Try hemp seeds: Although they don't have quite the gold-star nutrition as chia seeds, they're still high in protein, fiber, and omega-3s, and add a slightly nutty taste to yogurt and oatmeal.