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Why Do We Blink So Frequently?

New research indicates that the brain enters a momentary state of wakeful rest when we blink, perhaps allowing us to focus better afterward. Image via Flickr user Scinerm

We all blink. A lot. The average person blinks some 15-20 times per minute—so frequently that our eyes are closed for roughly 10% of our waking hours overall.

Although some of this blinking has a clear purpose—mostly to lubricate the eyeballs, and occasionally protect them from dust or other debris—scientists say that we blink far more often than necessary for these functions alone. Thus, blinking is physiological riddle. Why do we do it so darn often? In a paper published today in the Proceedings of the National Academy of Sciences, a group of scientists from Japan offers up a surprising new answer—that briefly closing our eyes might actually help us to gather our thoughts and focus attention on the world around us.

The researchers came to the hypothesis after noting an interesting fact revealed by previous research on blinking: that the exact moments when we blink aren’t actually random. Although seemingly spontaneous, studies have revealed that people tend to blink at predictable moments. For someone reading, blinking…

Secure your home with Blink's outdoor security camera, now 45% off at Best Buy

Keep an eye on activity around your home with Blink's Outdoor 2K+ security camera. The wireless camera records activity around your property in 2K, sends motion alerts to your phone and lets you speak with visitors using two-way audio. Best Buy has it for $54.99, a 45% discount, through Aug. 16.

Blink is a smart home security brand that makes indoor and outdoor cameras and video doorbells that connect to its mobile app.

Original price: $99.99

What the Blink Outdoor 2K+ camera does

Blink's Outdoor 2K+ is a wireless security camera designed to monitor areas around your home, such as your front door, driveway, backyard or garage. Its compact design makes it a practical option for an entry-level home security setup.

The camera records in 2K, while digital zoom lets you get a closer look at activity around your property. Color low-light viewing also helps capture more detail after dark.

How setup and monitoring work

Setup runs through the Blink Home Monitor app, which lets you monitor your camera from your phone and customize settings like video quality and motion…