TED Community » Ruben Vieira

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• A comment on Talk: Ron Gutman: The hidden power of smiling

  Feb 1 2012: children smile more than 400 times per day. 30% of adults smiles more than 20 and 14% less than 5.
  i need the study that says this. its for a movie about the benifits about smiling. its urgent. could you help me?