Over the last decade, researchers have strengthened the link between sleep and heart health, specifically. One theory for why consistent sleep helps your heart is that maintaining your circadian rhythm — the 24-hour cycle of your body’s internal clock — helps regulate cardiovascular function, Dr. Huang said. A regular bedtime routine — reading a few pages of a novel after you brush your teeth, for example — can help lock in a set sleep schedule. Even better: Make an early(ish) plan for brunch or a morning walk to give yourself added motivation for getting up. Take (even a brief) morning walk, if the weather allows, to expose yourself to sunlight around the same time each day, she recommended.