Sleep is one of the most underrated pillars of health. Adults typically need 7–9 hours per night. Poor sleep is linked to higher risk of heart disease, weight gain, and weakened immunity.
Tips that help: keep a consistent sleep schedule, limit screens before bed, avoid caffeine in the afternoon, make your room dark and cool, and wind down with a relaxing routine. If you snore heavily or still feel tired after enough sleep, talk to your doctor—sleep apnea and other conditions are treatable.