If you're having a hard time falling asleep, that sleep tracker

on your wrist might be to blame. And there's a name for this new kind of insomnia of the digital age: orthosomnia.

It's "when you just really become fixated on having this perfect sleep via tracker," said Seema Khosla, medical director at the North Dakota Center for Sleep. "And then you start worrying about it, and you wind up giving yourself insomnia."

Sleep trackers have become increasingly popular. They come in the form of watches, wristbands, rings and even mattresses. The gadgets measure how you breathe, how fast your heart is beating, how much you're tossing and turning. They crunch that data to produce a sleep score, usually through a smartphone app.

But in an irony of our digital lifestyles, for some people, perfecting that sleep score becomes an end unto itself — so much so that they can lose sleep over it.

Source: NPR