Screens and Blue Light
Understand how evening light, screens, and device habits can affect sleep timing and bedtime alertness.
Start here
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Blue Light and Screens
Screen light can affect circadian timing, but brightness, behavior, and individual sensitivity matter more than a simple blue-light rule. → 02How Electronics Affect Sleep
Learn how evening electronics can affect sleep through light, lost time, interruptions, and mental activation, plus how to test changes that fit the real problem. →Kids and teens
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Social media
Social Media and Sleep
A research-based guide to how social pressure, emotional content, nighttime checking, problematic use, and cybervictimization may affect sleep. Updated Jul 2026 →