Lungs, Magnetic Field and Deep Meditation. This series of exercises are all done seated, and can even be done in a chair. They are designed to expand your lung capacity, stimulate your circulatory system, and balance your electromagnetic field. The theme of Pratyahara is used–an inward focusing of your senses. Experience moments of pure awareness between the poses as you are gently invited to access a state of calm and meditation (dharana, dhyana, samadhi). This is an excellent preparation for beginners who need to learn how to access a deep meditative state.