Sleeping late? Your bedtime might predict a heart attack; here’s what science says

Sleep is essential for keeping the human body and heart in balance. It regulates blood pressure, metabolism, and overall cardiovascular function. Yet, in modern life, many people go to bed later because of long work hours or time spent on digital devices. Scientists are now learning that when we sleep may be just as important as how much we sleep. While poor or short sleep has long been known to raise the risk of heart problems, recent research has begun to explore whether bedtime itself plays a role. A new study published in Frontiers found that people who regularly go to bed after midnight on weekdays have a higher risk of heart attack. This discovery suggests that the timing of sleep could directly affect heart health. The human body follows a 24-hour internal clock known as the