One of the manifestations of pran, or life force, in the human body is breathing. By working with your breath you are able to tune in to the larger energies of the universe. Furthermore, there is an intimate relationship between thought and breath. When you calm your breath, there is simultaneous calming of the mind. When you succeed either in stopping the breath altogether or in stopping all thought, then you are in a state of samadhi or super-consciousness. The two are so intimately related that to stop one is to stop the other also.
Pranayam breath
