We believe it is time to take laughter seriously.
Fredrickson & Joiner (2018). Reflections on Positive Emotions and Upward Spirals, Perspectives on Psychological Science 13(2), 194-199.
Wagner, H., Rehmes, U., Kohle, D., & Puta, C. (2014). Laughing: A demanding exercise for trunk muscles. Journal of Motor Behavior, 46(1), 33–37. https://doi.org/10.1080/00222895.2013.844091