[VIDEO] Hidden Camera Proves Laughter is Contagious
Laugh, and the world laughs with you. Even if they're total strangers who happen to be standing on the same tram platform as you. This video, captured through hidden camera, proves it! :)
By Sadho Ram — 09 Jun 2013, 10:29 AM — Updated about 11 years ago
A bit about laughter
Laughing is an involuntary reaction to certain external or internal stimuli. Laughter can arise from such activities as being tickled, or from humorous stories or thoughts.
Most commonly, it is considered a visual expression of a number of positive emotional states, such as joy, mirth, happiness, relief, etc.
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.