Lighting Research Center

Advancing the effective use of light for society and the environment

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Will light help me stay more alert?

There is growing evidence that bright light during the day coupled with darkness at night can help you be wider awake during the day and sleep more soundly at night. You should:

  • Go outside in the daylight or sit right next to a bright window for at least an hour in the morning.
  • Avoid bright spaces late at night.



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