3. Drink more water
When your energy level drops, you may be tempted to run to the nearest coffee shop and refuel. But you might just need a glass of water. Lack of fluids can make you feel fatigued, so make sure you’re drinking about 1 mL of fluid for every calorie you eat, says Mansfield. That means if you consume a 2,000 calorie diet, you need about eight cups of fluids per day to stay hydrated and energized. Tired of plain old water? You can also hydrate with milk, tea and wet foods, such as yogurt and soups.