Yawning is a common reflex in which you open your jaw wide, take a deep breath, and then quickly breathe out. It lasts about 4-7 seconds and often happens when you're waking up or falling asleep....
Although excessive yawning is usually attributed to being sleepy or bored, it may be a symptom of an underlying medical problem. Learn about the possible causes and treatments.
It is commonly associated with tiredness, stress, sleepiness, boredom, or even hunger. In humans, yawning is often triggered by the perception that others are yawning (for example, seeing a person yawning, or talking to someone on the phone who is yawning).
Yawning has several triggers, like tiredness, waking up, boredom and stress. It can also be contagious as a way to show empathy.
Yawning, the involuntary act of opening your mouth, taking a deep breath, and exhaling, is the body's natural response to being tired or bored. 1 But yawning that happens excessively (or more often than usual) could indicate an underlying health issue.
Yawning can feel nice — but doing it all the time can be disruptive. Explore what excessive yawning is, why we do it, and get tips to help you stop.
All vertebrate animals yawn, but yawning too much can be a sign of a sleep disorder or other problem. Learn about causes and treatment for excessive yawning.
Yawning is triggered in response to small increases in brain temperature and is followed by a measurable cooling effect. The thermoregulatory theory is supported by the concept of a “thermal window.”