Interim NIOSH Training for Emergency Responders: Reducing Risks Associated with Long Work Hours

Using Light to Manage Alertness
ray of sunshine

You can help yourself stay awake and alert by being in brighter light.

  • When feeling drowsy, go to a place where the light is brighter.
  • Sunlight (even on an overcast day) is the best, brightest light source available.
  • Artificial lighting tends to be dim and will not increase alertness unless you are close to it.
  • It is not necessary to look directly into a bright light source to benefit; just work near it.

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Page last reviewed: April 1, 2020