Interim NIOSH Training for Emergency Responders: Reducing Risks Associated with Long Work Hours
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.
Page last reviewed: April 1, 2020
Content source: National Institute for Occupational Safety and Health