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Yawn

Robin covers his mouth with his face as he yawns.[1]

A yawn is a reflex of simultaneous inhalation of air and stretching of the eardrums, followed by exhalation of breath. Pandiculation is the act of yawning and stretching simultaneously.

Yawning is commonly associated with tiredness, stress, overwork, lack of stimulation and boredom. In humans, yawning is often triggered by others yawning (e.g. seeing a person yawning, talking to someone on the telephone who is yawning) and is a typical example of positive feedback. This "infectious" yawning has also been observed in chimpanzees and dogs.

Once Sinestro told a boy named Bobby Johnson that because he yawned, he spread the "sickness" of yawn to his sister Susan. He told them he could cure both of them of their "condition" if they each give him five bucks. Upon receiving the money he uses his Qwardian Power Ring to create an energy blast which kills them both.[2]

References

  1. As seen in The All New Super Friends Hour (Episode 7).
  2. As seen in Super Villains for your Health.

External Links

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