**Abstract**

Using the nested model of well-being, yoga, breath, and group classes are discussed to elucidate the physiological and psychological benefits that increase well-being in terms of health and social/environmental impact. Recent theoretical advances that detail the mechanisms at work in group yoga practice are explicated. Creating heat and release in the body are discussed regarding physical health and improved self-regulation and functioning. Recent yoga research across cultures is examined. Based on theoretical and applied research, group vinyasa yoga supports increased health and better relationships with others through increased self-regulation. Overall, practitioners across the developmental spectrum report benefits that span intra and interpersonal functioning. Additional research is needed to quantify students' change, and to delineate body type and physiology that best respond to the sweat response in order to inform dosage, acclimatization and increased well-being.

**Keywords:** well-being, sweat, physiology, yoga
