Tyler Crotty, whose efforts to stave off sleep upstaged President Bush on network TV earlier this week, woke up a star Friday: He was a guest on “Late Show with David Letterman.” The 13-year-old ...

For parents who struggle to achieve a peaceful, easy bedtime routine with their toddlers, a La Jolla businessman has authored his first book in an attempt to alleviate strife around sleep. Ethan ...

Yawning is an automatic body response to tiredness or stress. Less commonly, excessive yawning can also be a sign of an underlying health condition. It can be related to the vagus nerve, sleep ...

Yawning is usually brushed off as a sign of fatigue or lack of sleep. But for some, it could be the body’s quiet way of asking for help. Researchers have found that excessive yawning, especially when ...

A yawn is an involuntary reflex that involves opening the mouth wide and taking in a deep breath, followed by a slow exhale. Several theories exist about why we yawn, but researchers have not proven ...