A smile is contagious. But it is not bad to the body of any kind. If someone smile happily very happen to fit, then we can't help but feel with or want to smile, because of the results of the experiment. Found.A function of the muscles on the face in the manner of a smile as well. Although sometimes volunteers may unconscious that smiling is probably sounds strange, a bit, but this is what happened.
การแปล กรุณารอสักครู่..