Caffeine can kick start your senses within 15 minutes. See exactly what caffeine does to your body with this interactive graphic.

Is tea better than coffee for anxiety? Because coffee contains caffeine, it may not work as well as caffeine-free teas for promoting relaxation and calm.

Is it healthy to sleep six hours a night? Experts discuss whether six hours is enough sleep, the potential health impacts, and tips to improve sleep hygiene.

You may not be getting quality sleep if you have sleep apnea fatigue. These tips can help you sleep better, reduce fatigue, and increase your energy.