2.

If your usual breakfast is a muffin, doughnut, bowl of sugary cereal, or even worse, nothing at all, you’re likely to feel the effects just a few hours into your day.

Filling your body with a heavy dose of carbs leads to a spike in blood sugar, followed by a crash that can make you feel desperate for a nap.

If you have time, scramble eggs for breakfast. If not, spread peanut butter on a piece of whole-wheat toast, enjoy a bowl of yogurt with fruit, or grab a protein-enriched bar or smoothie.

Instead of an afternoon candy bar, have apple slices with a small piece of cheese.