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Many contemporary Yoga practitioners, especially those in Western countries, look upon āsana as a tool for achieving physical fitness and flexibility. The yogic postures have certainly demonstrated their physiological benefits in millions of cases. They improve musculoskeletal flexibility, strength, resilience, endurance, cardiovascular and respiratory efficiency, endocrine and gastrointestinal functioning, immunity, sleep, eye-hand coordination, balance. Experiments also have shown various psychological benefits, including improvement of somatic awareness, attention, memory, learning, and mood. The regular practice of postures also decreases anxiety, depression, and aggression.1 All these effects are clearly beneficial and highly desirable. Yet, the traditional purpose of āsana is something far more radical, namely to assist the Hatha-Yoga practitioner in the creation of an “adamantine body” (vajra-deha) or “divine body” (divya-deha). This is a transubstantiated body that is immortal and completely under the control of the adept’s will (which is merged with the Divine Will). It is an energy body that, depending on the adept’s wish, is either visible or invisible to the human eye. In this body, the liberated master can carry out benevolent activities with the least possible obstruction. ĀSANA AS A TOOL OF NONDUAL EXPERIENCE2 The transubstantiated body of the truly accomplished Hatha-Yoga master is, realistically speaking, out of reach for most of us—not because we are not in principle capable of realizing it but because only very few have the determination and stamina to even pursue this yogic ideal. Does this mean we have to settle for the more pedestrian benefits of posture practice? I believe there is another side to āsana, which, while not representing the ultimate possibility of our human potential, is yet a significant and necessary accomplishment on the yogic path. That is to cultivate and experience āsana as an instrument for tasting nonduality (advaita). Almost all Yoga authorities subscribe to a nondualistic metaphysics according to which Reality is singular and the world of multiplicity is either altogether false (mithyā) or merely a lower expression of that ultimate Singularity. Typically, Yoga practitioners assume that the experience of nonduality is bound to the state of ecstasy (samādhi) and that this state is hard to come by and is likely to escape them at least in this lifetime. But this belief is ill founded. In fact, it is counterproductive and should be regarded as an obstacle (vighna) on the path to enlightenment. While we might not have an experience of ecstasy, we can have an experience of nonduality. The ecstatic state is simply a special version of the nondual experience. As Karl Baier, a German professor of psychology and practitioner of Iyengar Yoga, has shown, posture practice can be an efficient means of nondual experience in which we overcome the most obvious and painful duality of body and mind.
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