Resist Skipping Meals
Skipping or missing a meal can cause a dip in your blood sugar, leading to crankiness and lethargy. Maintain your blood sugar levels, and your energy, by eating small amounts of food throughout the day. You might even prefer eating six smaller meals rather than three large ones.
Dehydration can also make you feel sluggish and lethargic. Be sure to drink throughout the day, and don’t rely on thirst alone to remind you to have another glass of water. Some experts say the average person needs about eight glasses of water, and that may be hard to drink without reminders.
Think Moderation, Especially for Low-Nutrient Foods
Avoid a lot of caffeine, refined carbohydrates (sugar), alcohol, salt, and other food additives. Any of these, especially in large amounts, can decrease your metabolic efficiency. “Eating large quantities of carbohydrates tends to cause an energy rush and then a big crash, which can lead to crankiness and fatigue,” says Heidi McIndoo, MS, RD, a nutrition consultant in Roslindale, Mass. Excess salt can disrupt your fluid balance, changing your daily water needs, not to mention increasing health risks like high blood pressure.
Strive for Balance in the Food You Eat
Properly combine protein, carbohydrates, and fat to achieve a balanced energy intake. In general, a healthy diet includes a mix of whole grains, fruits and vegetables, and some protein, but each person has individual needs based on age, sex, physical activity level, body size, and stress factors. To determine the best foods for you, consult a nutritionist who can help you find the right balance.