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Exhausting and Funny Photos of People and Animals Yawning

yawn-z

Yawning is a natural reaction that occurs in both humans and animals, that is a symptom of tiredness, boredom, stress or overworking.  Additionally, yawning is a symptom of various medications including some antidepressants.  Yawning can be funny, or annoying depending on the situation, but we rarely have control over when it happens.

Yawning is often viewed as ‘contagious’, as people who observe others yawning often tend to yawn as well.  This phenomenon is associated with mirror neuron reactions in people.

So, here’s some exhausting and funny photos of people and animals yawning.