6. Drink More Water and Less Alcohol
You may already know that it's easy to confuse signals of hunger with thirst (we think we need food when we really need water). But did you know that thirst can also masquerade as fatigue?
"Sometimes, even slight dehydration can leave you feeling tired and lethargic," says nutritionist Keith Ayoob, EdD, RD, an associate professor at the Albert Einstein School of Medicine in New York and author of The Uncle Sam Diet.
The solution is simple: a tall, cool glass of water. This is particularly important to boost energy after exercise, when your body is likely to be craving fluids, Ayoob says. Conversely, Heller says, if you find yourself frequently fatigued even after a good night's sleep, try cutting down on alcohol during the evening hours.