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our Nights May Be Quietly Damaging Your Health — Here’s What Sleep Exper Humans evolved to sleep in darkness. But modern bedrooms are often

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When melatonin levels are disrupted, the brain may struggle to enter deep, restorative sleep. Even if you manage to sleep for several hours, the quality of that sleep may be reduced. Many people wake up feeling tired, mentally foggy, or emotionally drained without understanding why.

Experts also warn that emotionally stimulating content before bed — stressful news, arguments online, or endless scrolling — can keep the nervous system activated long after the screen is turned off.

Many people technically sleep for 6 to 8 hours but still wake up feeling exhausted. Sleep specialists say the issue is often not only the number of hours slept, but the quality of sleep itself.

Things that may silently reduce sleep quality include:

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