Chances are you may not be familiar with this exotic whole grain grown in the Andes mountains. But you should be. It has a light, mild flavor-making it ideal for guys who hate other whole grains. Even better, it's higher in protein than any other grain around, and packs a hefty dose of heart-healthy unsaturated fats. "Quinoa is also a great source of fiber and B vitamins," says Christopher Mohr, Ph.D., R.D. a professor of nutrition at the University of Louisville.