5 Signs Your Bo:dy Doesn’t Tolerate Sleeping With a Fan On

One of the most common signs is dryness in the mouth, throat, or nasal passages when you wake up. A fan constantly circulating air can dry out mucous membranes overnight, reducing their ability to protect against irritation, bacteria, and allergens.

As a result, you may notice:

• A scratchy or sore throat in the morning
• A dry mouth even if you’re well hydrated
• Nasal congestion or sinus pressure
  
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