Fast food is best avoided, but when there just isn't an alternative, choose your McMeal wisely. Lauren Antonucci, a clinical nutritionist and the owner of New York's Nutrition Energy, offers some smart selections that have more of what you need – fiber, protein, and slow-burning carbs – and less of what you don't. While it's surprisingly easy to steer clear of saturated fats and sugar, even healthy fast food is packed with salt, so if you do indulge, stick to low-sodium choices the rest of the day.
Another tip: "Avoid foods on the top right side of the menu," says Antonucci. "That's where they list items with the most saturated fat and calories."