Join thousands across the country for Yoga Day USA, a history-making celebration where yogis, novices, couch potatoes and triathletes, young, old and everyone in between join together to stretch mind, body and spirit through the practice of yoga. In the spirit of karma yoga, or service to others, all Yoga Day USA classes and workshops are free — or nearly free. The brainchild of the Yoga Alliance, this powerful annual event is held in yoga studios, parks, beaches and private homes throughout the US.