Blue light (like that from our smartphone) tricks the human brain into thinking it’s still daytime, even if it’s coming from something as small as a screen. So while you’re playing around with your new Pixel or Pixel XL after dark, subconscious signals to be awake are preventing you from getting to sleep as early as you should.

Luckily, the Google Pixel’s new “Night Light” feature helps solve the problem. Similar to the iPhone’s Night Shift mode or the f.lux app for desktop, this works by applying a blue light screen filter so that your phone will stop sending the wrong signals to your brain… more

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