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2. 8 Headphones You Can Comfortably Wear to Sleep - AOL

   www.aol.com/8-headphones-comfortably-wear-sleep...

   Ahead, eight versions of sleep headphones that are doing it best, depending on your sleep and ear needs. Download a 12-hour long brown noise playlist and call it a night. Sleep Headphones

3. Are Noise-Canceling Headphones Harmful to Your Ears? - AOL

   www.aol.com/noise-canceling-headphones-harmful...

   Key Takeaways: As the FDA does not regulate headphone volume, it’s up to us to self-regulate our listening volume. Noise canceling headphones can help keep your volume within a safe range, so ...

4. Noise-cancelling headphones - Wikipedia

   en.wikipedia.org/wiki/Noise-cancelling_headphones

   Noise-cancelling headphones. Noise-cancelling headphones are headphones that suppress unwanted ambient sounds using active noise control (ANC). Active noise cancellation makes it possible to listen to audio content without raising the volume excessively. In an aviation environment, noise-cancelling headphones increase the signal-to-noise ratio ...

5. Sleep Doctors Say *This* Is The Best Temperature for Sleep - AOL

   www.aol.com/sleep-doctors-best-temperature-sleep...

   The best way to prep your sleep space is simply to set your thermostat to the optimal sleeping temperature 60 to 67° F about an hour or so before bed, says Dr. Paul Harris. However, there are a ...

6. Aerosinusitis - Wikipedia

   en.wikipedia.org/wiki/Aerosinusitis

   Aerosinusitis. Paranasal sinuses. Aerosinusitis, also called barosinusitis, sinus squeeze or sinus barotrauma is a painful inflammation and sometimes bleeding of the membrane of the paranasal sinus cavities, normally the frontal sinus. It is caused by a difference in air pressures inside and outside the cavities. [1][2][3][4][5]

7. Nosebleed - Wikipedia

   en.wikipedia.org/wiki/Nosebleed

   A nosebleed, also known as epistaxis, is an instance of bleeding from the nose. [ 1 ] Blood can flow down into the stomach, and cause nausea and vomiting. [ 8 ] In more severe cases, blood may come out of both nostrils. [ 9 ] Rarely, bleeding may be so significant that low blood pressure occurs. [ 1 ]