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It may be hard to stop, but looking at your phone at night is a terrible idea.

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Smartphone screens emit bright blue light so you can see them even at the sunniest times of day.

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But at night, your brain gets confused by that light, as it mimics the brightness of the sun. This causes the brain to stop producing melatonin, a hormone that gives your body the "time to sleep" cues. Because of this, smartphone light can disrupt your sleep cycle, making it harder to fall and stay asleep — and potentially causing serious health problems along the way.

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Here's how it works:

Skye Gould/Tech Insider

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