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So, you stayed up late because you started watching Love Is Blind and just couldn’t stop. Or you had to finish the latest chapter in your book. It happens—but if this sounds like a habit you can’t kick, you might want to reconsider your laissez faire bedtime. According to a new study published in the Journal of the American College of Cardiology, varying the time you go to sleep by 90 minutes (earlier or later than usual) can put you at greater risk of heart disease and heart attacks—even if you’re adjusting your morning alarm, too.

But that doesn’t mean you have to doze off at the same precise moment each night. Observing 786 participants between the ages of 45 and 84, research showed that a 30-minute window for falling asleep is just fine for your health. So, if you typically go to bed at 11 p.m., staying up till 11:30 p.m. or hitting the hay at 10:30 p.m. won’t have negative consequences where your heart is concerned.

Not only will a nighttime ritual help you to destress at the end of a long day; it can also ease you into keeping a standard bedtime. A bath might be the thing to put you in the right mood to count sheep, or maybe a cup of warm turmeric tonic will do the trick—there’s no shortage of tips to try from The Wind Down. And if, on occasion, you have an unintentional wave of insomnia, don’t stress too much—it’s no use losing sleep over, well, losing sleep. Just do your best to drift off—and if you still struggle, you consider the help of a snooze specialist.

See more stories like this: Well, Here’s Another Reason to Take More Naps What Happens to Your Body When You Wake Up at 5 a.m. Every Day This Is What Happened When I Tried 5 Different Natural Sleep Aids