8 Caffeine-Free Ways to Stay Perked Up…Even When the Days Get Shorter

For sustained energy, you need grub, not another cup of joe. “Only calories give real energy,” says nutritionist Keri Glassman, R.D. “You need carbs and fiber to control blood sugar, plus protein and healthy fat to keep you full.” Try a baked sweet potato with a tablespoon of chopped nuts, or a slice of Ezekiel toast with avocado.