In this talk, Swami Sita explains the concept of Prana as vital energy or life force.  Swamiji tells us the 5 things we can do with prana: increase, conserve, balance, channel, purify.  She then explains how we can increase prana and not lose prana from the 5 elements of nature: earth, water, fire, air, and ether.  Swamiji gives many practical examples that are very useful for us in our daily life.