It's not a secret that the main thing in yoga practice is your own inner work, awareness of everything that happens inside while one's body performs this or that posture. But it's always interesting to see what the others can do with their bodies.
The aim of hatha yoga as one of the stages on the way to the apogees of raja-yoga is conquering the universal vital energy, Prana. Prana exists everywhere, manifesting itself in different forms and nature. Filling and penetrating all the living and nonliving matter, it unites body, mind and spirit. Prana can be obtained from atmosphere and from food.