Yawn - Wikipedia Yawning (oscitation) most often occurs in adults immediately before and after sleep, during tedious activities and as a result of its contagious quality [8] It is commonly associated with tiredness, stress, sleepiness, boredom, or even hunger
Why Do We Yawn? - WebMD 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
Yawning Definition Causes - Cleveland Clinic When you yawn, several muscles in your face tense and stretch Sometimes, this can pull on and stimulate your lacrimal glands, which leads to tears and watery eyes
Excessive Yawning: Symptoms, Causes, and Treatment Excessive yawning might be due to sleep disorders, medication side effects, or a health condition Your provider may order an EEG, MRI, or overnight sleep test to determine the cause of unexplained yawning and sleepiness
Why Do We Yawn? Science Explains Science explains the reasons why we yawn, whether animals yawn too, and how contagious yawning works Also, sometimes it signals illness
Why Do We Yawn? | Sleep Foundation Scientists still do not know exactly why we yawn, but they have several theories Learn more about what causes yawning and why it is so contagious