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Laughter

The first time you laugh is when you are at 3.5 to 4 months. For infants, laughter is way they communicate with their mother or caregiver.

Laughter is really hard to control consciously

We believe laughter evolved from the panting behavior of our ancient primate ancestors.

People have a tendency to only laugh at pause breaks. Laughter is not usually randomly scattered through speech

In a study of depressed and suicidal senior citizens, the patients who recovered were the ones who demonstrated a sense of humor.

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