When you skip breakfast, your blood sugar drops. Low blood sugar leaves you feeling hungry, moody, and fatigued. When you fast for too long, your body tends to store more calories. For this reason, skipping meals can cause your metabolism to slow down. Cortisol levels are highest in the morning, and it’s important to eat breakfast to keep your cortisol levels in check. If you don’t eat breakfast, your cortisol levels remain elevated and you might feel jittery or anxious.

Studies have shown that regularly skipping breakfast is linked to weight gain as well as increased risk for heart disease, high blood pressure, high cholesterol, obesity, and diabetes. Studies have also demonstrated that people who eat breakfasts high in protein tend to eat fewer calories overall during the day; a high-protein breakfast can help you manage your appetite and make better nutritional choices throughout the day. We tend to make poor food choices when we’re feeling hungry or stressed, so eating a healthy breakfast can help us start the day on the right track."