One of the main vayus functioning in the human body.

Governs physical activity of a person, nourishes all nervous and muscle tissues and also vascular system of the body. Regulates interaction between muscles and the organs they are connected to. For example, it activates unstriated muscles that participate in the activity of all hollow organs (stomach, intestines, blood vessels).

During physical exercises prana is distributed all over the body with the help of this type of vayu. Viyana is also responsible for body growth and physical tonus. The malfunction of viyana leads to temperature rise and other metabolic disorders.