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

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

   From teeny tiny sleep buds to speakers built into headbands, these are the best headphones to wear to bed in 2023.

3. Our tech writer's pick for best budget earbuds are 50% off ...

   www.aol.com/lifestyle/our-tech-writers-pick-for...

   Why is this a good deal? 💰 Even at their usual $40 price, these Baseus buds are a steal. But, right now during Amazon's Labor Day sale, they're 50% off — bringing them down to the lowest ...

4. Blue light spectrum - Wikipedia

   en.wikipedia.org/wiki/Blue_light_spectrum

   LED lighting, digital screens, and fluorescent bulbs are examples of common artificial blue light sources. [7][6] LED lighting is widely used due to its durability and energy efficiency. [2] It emits more blue light than traditional incandescent bulbs, potentially impacting the quality of sleep and eye health if used excessively at night. [2][8] Smartphone with a digital screen that emits blue ...

5. Noise-cancelling headphones - Wikipedia

   en.wikipedia.org/wiki/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 significantly more than ...

6. Take 20% Off Raycon Earbuds, Headphones and Speakers ... - AOL

   www.aol.com/entertainment/20-off-raycon-earbuds...

   Limited time sale! If you’re looking to upgrade your everyday listening experience, you’ve come to the right place. Raycon has an amazing selection of best selling earbuds, headphones and more ...

7. Polyphasic sleep - Wikipedia

   en.wikipedia.org/wiki/Polyphasic_sleep

   Polyphasic sleep is the practice of sleeping during multiple periods over the course of 24 hours, in contrast to monophasic sleep, which is one period of sleep within 24 hours. Biphasic (or diphasic, bifurcated, or bimodal) sleep refers to two periods, while polyphasic usually means more than two. [1] Segmented sleep and divided sleep may refer ...