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Merely thinking about or seeing someone yawning can make you yawn. But why?
The yawn reflex has long been observed to be contagious. In 1508, Erasmus wrote, "One man's yawning makes another yawn", [39] and the French proverbialized the idea to "Un bon bâilleur en fait bâiller sept" ('One good gaper makes seven others gape'). [40] Often, if one person yawns, this may cause another person to "empathetically" yawn. [23]
Humans’ first experience with yawning happens in utero, says Matthew D. Epstein, M.D., associate medical director of the Atlantic Health Sleep Centers in New Jersey.Yet, Earth-side, the somewhat ...
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A hypnic jerk, hypnagogic jerk, sleep start, sleep twitch, myoclonic jerk, or night start is a brief and sudden involuntary contraction of the muscles of the body which occurs when a person is beginning to fall asleep, often causing the person to jump and awaken suddenly for a moment.
The word hypnagogia is sometimes used in a restricted sense to refer to the onset of sleep, and contrasted with hypnopompia, Frederic Myers's term for waking up. [2] However, hypnagogia is also regularly employed in a more general sense that covers both falling asleep and waking up.
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"Stay Awake" is a song from Walt Disney's 1964 film Mary Poppins composed by Richard M. Sherman and Robert B. Sherman. [1] It is a lullaby sung by Mary Poppins (Julie Andrews) to the children Jane and Michael. The children protest when Mary tells them it's time for bed, but when "Stay Awake" is sung, the children yawn and doze off to sleep.