Checking your phone at night and before going to sleep seems like a normal habitual act, but it is some harmful than you think.

Smartphone screens emit bright blue light to help you see in the bright sunny morning. But at night, your brain gets confused by that light, as it mimics the brightness of the sun, reports Tech Insider.

 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.

Here's how it works: