henry copeland: Smiles for faster miles?! via @sweatscience pllqt.it/KeafQY
Smiling Makes You a More Efficient Runner | Outside OnlineDuring the runs, the volunteers were instructed to smile, frown, relax their hands and upper body (by imagining, for example, that they were carrying potato chips between their thumb and forefingers without breaking them), or just think their usual thoughts. The results more or less supported the benefits of smiling. Running economy was a little more than 2 percent better when smiling—an improvement that’s comparable to what you see in studies of weeks or months of plyometrics or heavy weight training.