Chicago-based registered dietitian Maggie Michalczyk, R.D., previously told mbg that the best breakfasts are the most balanced. 

Naturally balanced meals contain protein, healthy fats, and fiber-rich carbohydrates. For breakfast, look for foods like eggs, Greek yogurt, berries, nuts, seeds, avocado, and olive oil, to name a few staples. 

Try to limit the presence of highly-processed foods when you can, as whole and natural foods “can help maintain healthy levels of hormones like insulin (blood sugar hormones), cortisol (stress hormones), and others,” she says.