The researchers found that those who get more sunlight each day typically go to bed early and get more sleep every night, which is something to keep in mind if you usually have a hard time getting a shut-eye. Women aged 30 to 60 tend to turn in earlier and wake up a bit later, ultimately getting 30 minutes more sleep. Middle-aged men, on the other hand, get the least amount of sleep.

There are many factors why so many people are sleep deprived, including work and kids. Whatever the reason is, the study shows that a lot of adults are building up a sleep debt, affecting not just their performance at work, but also their health.

As Olivia Walch, one of the paper's authors, explains: