In 2018, a small study by the Psychology of Sport & Exercise investigated the effects of facial expression and relaxation cues on movement economy, physiological and perceptual responses during running.
Guess what? It was concluded that smiling improved running economy in comparison to frowning. Perceived effort was also higher when frowning in comparison to smiling and relaxing
Whilst this study is related to running, we have been carrying out our own research over the last seven years in CrossFit Anam and we confidently conclude, with the help of Nuala, that smiling will 99.9% enhance your CrossFit workout!!
So if you're struggling towards the end of a WOD.... 'grin and bear it'