Laughter

Laughter is a physical reaction in humans and some other species of primate, consisting typically of rhythmical, often audible contractions of the diaphragm and other parts of the respiratory system. It is a response to certain external or internal stimuli.

Etymology

The term "laughter" comes from the Old English "hleahtor", which is derived from the Proto-Germanic "hlahtraz". It is associated with the words for "play" and "jump" in many languages.

Types of laughter

There are many forms of laughter, including giggling, chuckling, belly laughter, and snorting. Each type of laughter can convey different emotions and have different effects on the body.

Physiology

Laughter is a part of human behavior regulated by the brain, helping humans clarify their intentions in social interaction and providing an emotional context to conversations.

Health effects

Laughter has been shown to have beneficial health effects, such as reducing stress, boosting the immune system, and enhancing mood.

Laughter in animals

Laughter is not exclusive to humans, as many animals also exhibit laughter-like behaviors, often in response to play and tickling.

See also

• Humor
• Laughter in animals
• Laughter therapy
• Laughter and health
• Laughter in literature

References

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Laughter

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  Advert Youngs The Hatter Victorian Era Bridgeport CT
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  Harold Lloyd Portrait in Who's Who on the Screen