When it's time to sleep, I like to create the coziest atmosphere . That means a warm room, plenty of layers and dim lights. A closed window is a must. But since October hit, I've noticed instead of snuggling up to sleep, I'm tossing and turning in a room that feels stuffy.

I asked the experts what was happening and they made a simple suggestion: start opening the window. This two second hack lets out carbon dioxide, stale air and excess moisture and lets in the fresh, clean air that's necessary to sleep.

Yes, open windows also cool down your bedroom but as the experts explain, that's a good thing when you're trying to sleep. So grab a blanket, prop open the window, and discover why this quick habit is your key to good sleep this fall and winter.

The 2-second task that will help you sleep better

“It may sound counterintuitive in the cold nights of winter, but opening your bedroom windows is important for your health, your sleep quality and your hygiene," explains Dr.…