Using Light to Manage Alertness

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.