Levitation is a well documented phenomenon, in fact ancient yogic texts (Hatha Yoga pradipka, yoga sutras, etc) as well as modern ones (Science of pranayama by HH Sri Swami Sivananda) claim it to be a siddhi (psychic power) which one can aquire. Even the christian faith has had its own levitating saints, namely St. Joseph. Of course, due to the Einsteinian veiw of the universe which clouds the minds of scientists and commonfolk alike, this phenomenon is invariably labeled as a hoax. This is thought to defy gravity, but if you were to know how gravity truly worked, you would know that yogis levitate because of gravity. This would require an almost complete overhaul of orthodox physics, which would be a long and difficult task. Actually, one man has done this, named Joseph H Cater. He has written an exhaustive treatise named "The Awesome Life Force" This book introduces Soft Particle Physics, which explains all phenomenon, from the occult, to the metaphysical, to the all too commonly overlooked happenings in the scientific realm. Here are a few statements made by Cater that disagree with popular science: Gravity is an electromagnetic wave Gravity has limited penetration Gravity pulls posotively charged matter in the opposite direction of propogation, and pushes negatively charged matter away Gravity is is just below the infrared spectrum If you have the resources, try experimenting with an oscillator and prove me right. (or wrong!) I can not go into length about the whys of these claims, doing so would require pages of explainations and illustrations. I can, however, answer any of your specific questions to the best of my ability.