Have you ever wondered how you might stay cool while sleeping? Don’t worry, Lifehacker has you covered.

Great tips include:

-Use an AC, and turn it on earlier than the exact moment you want the room to be cool.

-Turn your AC to a cooler temperature at night because a study showed we sleep better in the cold. Also, and not at all contradictorily, use a sleep mode that will raise the temperature while you’re sleeping because you won’t notice.

-Take a cool shower.

-Wear less clothes.

-Sleep spread out instead of curled up.

But my favorite:

You might already know this tip, but you can also skip the duvet/quilt/blankets entirely and sleep under a top sheet.  

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I didn’t know I could sleep with a sheet instead of a comforter, Lifehacker! This changes everything!