Health Tip: Why You Yawn
(HealthDay News) -- Yawning typically occurs when you feel sleepy or bored, says Cleveland Clinic.
People do not yawn because the brain needs more oxygen, the clinic notes in dispelling a common myth. Instead, yawns allow us to regulate both air pressure in our ears and brain temperature.
Yawns are not really contagious. Often, people yawn in the same environment because they are exposed to the same temperature and need to thermoregulate, too, the clinic says.
The news stories provided in Health News and our Health-E News Newsletter are a service of the nationally syndicated HealthDay® news and information company. Stories refer to national trends and breaking health news, and are not necessarily indicative of or always supported by our facility and providers. This information is provided for informational and educational purposes only, and is not intended to be a substitute for medical advice, diagnosis, or treatment.