
After a long day, scrolling through your phone in bed can feel like the perfect way to unwind. Maybe you check social media, watch a few videos, answer messages, or read the news. The problem? Your brain may not see this as winding down.
Electronic devices emit blue light, which can interfere with the body’s natural sleep-wake cycle. Exposure to light in the evening can suppress melatonin, a hormone that helps signal that it is time to sleep. As a result, using your phone right before bed may make it harder to feel sleepy and fall asleep.
There is another issue, too: your phone can keep your brain engaged. Even if you’re physically tired, an interesting video, exciting conversation, or endless stream of content can encourage you to stay awake longer than planned.
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