What if we told you there was a groundbreaking new tool to help you lose weight, reduce bloat, fight cancer, and increase your energy—all for just about 19 cents a piece? And bonus: Each one comes with a free carrying case, so you can grab it and go! You'd call us bananas. And we'd say you're right. The humble fruit—botanically, actually a berry!—is perhaps the least-heralded supermarket staple, a superfood more associated with kids, monkeys, and slapstick comedy than with steel-cut abs. But its powers are proven, and to investigate just how bananas can be, we consulted our team of nutritionists to determine exactly what eating one banana does to your body.