Yoga Ćitta Vrtti Nirodha: Yoga is the stilling of the fluctuations of the mind. It's the first statement of the 2000 year old philosophical treatise by a scholar called Patanjali that almost all types of yoga, both in the east and in the west, take their guidance from. The yoga most commonly practiced yoga in the west is Hatha (pronounce HAR - T'HAR with a hard T sound), the approach to yoga that starts by working on the body. But the direction of all yoga is the same: bridging the gap between the parts of our selves; body, mind, intellect and on; and moving closer to a state of personal equanimity. And this is why you notice it mentally and emotionally as well as physically when you have skipped a few yoga practices. As much as we'd sometimes like to, it is impossible to separate our bodies from the other aspects of who we are. But we can come to terms with the bodies we've got, and even gradually transform them. And that is why we do yoga.