Natural surroundings-- sunshine, fresh air, birdsong-- enhance horse job to lower stress and anxiety hormonal agents, improve mood

https://www.scribd.com/document/1059829270/Hands-Hooves-and-Heart-Experiential-Discovering-That-Lasts-174839

Native environments-- sunlight, fresh air, birdsong-- enhance equine job to reduced stress hormones, improve mood, and support focus and sober living routines.