Human Growth and Development / Unit 11 HGD 1514 short lesson, about 20 seconds
Phones and Sleep
Captions available
The idea
Heavy phone use goes with worse sleep quality and quantity, but whether screen blue light is the cause is disputed.
In practice
Arousal from messages, lost time and a weakened link between bed and sleep offered as alternatives.
Where people slip
The misconception is that blue light is proven to be why phones harm sleep; use close to bedtime matters more than total use.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Unlocks
- Nothing yet depends on this.
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