Prana is a subtle invisible force. It is the life-force that pervades the body. It is the factor that connects the body and the mind.

The term Pranayama is often translated as the control or restraint of Prana. The energy in the body is Prana. By controlling the motion of the lungs or respiratory organs, we can control the Prana that is vibrating inside. By control of Prana, the mind can be easily controlled, because the mind is fastened to the Prana.

A life span is, not the number of years but by the number of ones breaths taken!