Photo: 1MoreCreative/iStock

2 of 6
The Mistake: You eat breakfast... but it's typically oatmeal or a bagel.

Why That's a Problem: You're doing the right thing by eating in the morning, as regularly scheduled meals keep your metabolism humming along, but a little protein would go a long way toward helping the cause. It takes more energy to digest than carbohydrates, and it promotes muscle mass.

The Fix: Add 20 grams of protein at breakfast, recommends Jessica Crandall, RD, a spokesperson for the Academy of Nutrition and Dietetics, roughly the amount in one container of plain low-fat Greek yogurt.