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Getting a good night’s sleep is critical to having a productive day. A great way to prevent a good night’s sleep is to spend the last hours of the day watching TikTok videos or playing Candy Crush.
The body determines when it’s time to sleep via a number of cues, the most obvious being darkness. Staring at a light-emitting electronic screen counters these cues, and some have argued that blue light in particular is to blame. Blue light has a higher-energy wavelength, and our bodies associate its high intensity with the early hours of the day. So, such light is a cue to the body to remain alert, and it can also inhibit the pineal gland’s production of melatonin, a chemical the body produces to promote sleep.