Yogurt for breakfast is nothing new, but Greek yogurt is skyrocketing in popularity. Not only does it have twice the protein as regular yogurt, but it's richer and creamier than regular yogurt. The extra protein will leave you feeling more satisfied throughout the morning.
Greek yogurt is also lower in carbohydrates. The carbohydrates in a doughnut or bagel will cause you to crash later in the day. And we know already that a sugar crash comes with decreased mental alertness. Add some fruit or almonds to your yogurt for enhanced flavor and healthy fat.