Pablo Alcala/Lexington Herald-Leader/MCT
July 12, 2012
Runners run barefoot around some debris from Coldstream Park in Lexington, Kentucky.
Compared with sedentary subjects, those who ran regularly were 70 percent less likely to experience high stress and life dissatisfaction, according to a study of more than 12,000 people published in the Scandinavian Journal of Medicine & Science in Sports. Regular exercise increases adrenal activity, which facilitates stress adaptation and enhances the release of hormones like noradrenaline, serotonin, beta-endorphin, and dopamine. These hormones all improve mood, says Peter Schnohr, M.D., the study's lead author.