Doctor Warns Why Sleeping With Your Windows Closed Is Ruining Your Sleep

Getting a good night’s sleep is something many of us struggle with, but there are certain things you can do to encourage a more restful night. From reducing screen time before bed to avoiding caffeine after noon and even listening to nighttime meditations, many people find ways to hack the system, so to speak. However, one doctor says there’s one thing you might be doing that’s working against you: sleeping with the window closed.

Dr. Eric Berg thinks we need to open our windows more.

While the idea of sleeping with a window open might not seem very inviting, especially as the nights get colder, Dr. Berg says that closing the window while you snooze is a bad idea.

That’s because sleeping with closed windows means there will be more CO2 in your bedroom and less oxygen.

“You’re in a room when the windows are not open and you’re not getting enough oxygen, because maybe you don’t also have enough plants in your room which give you oxygen, you may have a tendency to have more CO2 in that room,” he explained in a TikTok clip.

You’ll automatically sleep better when you have more fresh air.


Are you getting enough oxygen in your sleep space? Studies show that when you open up your windows or get more plants in your room, you can improve your sleep and increase growth hormone levels. Click the link in my bio to watch the full video and learn more! SleepTips DrBerg 😴

♬ original sound – Dr. Eric Berg – Dr. Eric Berg

While there are a lot of other things that are at play when it comes to sleeping well at night, Dr. Berg insists that sleeping with the window closed undoubtedly hinders your chances of a restful night.

“And just that alone can affect your sleep in a negative way. This is why, when you open the window if you can, or you get a plant next to where you’re sleeping, you can definitely sleep better just for the fact that you’re increasing the oxygen and you’re lowering the CO2,” he explained.

“So many people are spending all day in a room with a higher level of CO2 and not enough oxygen.”

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If you don’t want to sleep with your windows open this winter, there is a way around it.

If you’d prefer to stay warm and toasty at night, you can still decrease the CO2 in your room by having a live plant in your bedroom. The plant will take the CO2 out of the air and keep the environment much more conducive to healthy sleep.

Jennifer Still is a writer and editor with more than 10 years of experience. The managing editor of Bolde, she has bylines in Vanity Fair, Business Insider, The New York Times, Glamour, Bon Appetit, and many more. You can follow her on Twitter @jenniferlstill