prana
Prana is a term for the life-force which moves through the body. It refers to the energies of life itself, that which pulses through the nervous system of the planet and through the nervous system of our self. At the basis of yogic techniques is the increase of the flow of prana through the body. Also known as mana or qi.
In the subtle arts, prana follows an energetic structure within the self knwon as the chakras.