Sunday, Aug 9 is National Book Lovers Day, and who doesn’t love getting lost in a good book? But before you crack open your next novel, consider this: Losing sleep to get lost in a book can take a toll on your health, and it’s more common in women than men.

According to a new survey from the American Academy of Sleep Medicine (AASM), a majority (66%) of US adults report losing sleep due to staying up “past their bedtime” to finish a book. The survey also found that women (71%) are more likely to lose sleep due to reading a book than men (61%).

If you find yourself losing track of time while reading, it may be time to change up your nighttime routine. Sleep experts recommend setting a bedtime alarm to remind yourself that it’s time to put the book down for the night.

“It can be tempting to try and squeeze in one more chapter of a great book, but everyone should make it a priority to get enough sleep to wake feeling refreshed and alert,” says AASM president Kannan Ramar, MBBS, MD, in a release. “Consistently waking up feeling unrefreshed, or struggling to stay awake throughout the day, is a warning sign that either you are not getting enough sleep, or you may have an untreated sleep disorder.”

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