[Source: Medical X-Press]

While people the world over enjoy a good laugh, remarkably little is known about this instinctive behavior.

Before babies can talk or walk, they can laugh. An infant’s first giggle at around four months enchants and reinvigorates even the most weary parent and, from then on, it’s a lifelong tool for communicating with the world.

Laughter is a social glue that binds people together, helping to navigate and smooth all manner of experiences and encounters. Yet there’s very little science on how this works.

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