"Thus the three primary forces: vata (motion), pitta (energy) and kapha (inertia) control all the functions if the human body. They are produced and regulated endogenously. The vata dosha controls the utilization of energy cells as well as the other two dosha, while the pitta dosha gives energy and is responsible for celluar, enzymatic and metabolic functions. Kapha dosha helps in synthesis and preservation of cellular components. They are subject to qualitative and quantitative change due to the influence of factors within or outside the body."