Yoga (Sanskrit: योग) is the physical, mental, and spiritual practices or disciplines which originated in ancient India with a view to attain a state of permanent peace of mind in order to experience one's true self. The term yoga can be derived from either of two roots, yujir yoga (to yoke) or yuj samādhau (to concentrate). The Yoga Sūtras of Patañjali defines yoga as "the stilling of the changing states of the mind"(Sanskrit: योग: चित्त-वृत्ति निरोध:). Yoga has also been popularly defined as "union with the divine" in other contexts and traditions.
Of the individual consciousness or soul with the Universal Consciousness or Spirit. Though many people think of yoga only as physical exercises — the asanas or postures that have gained widespread popularity in recent decades — these are actually only the most superficial aspect of this profound science of unfolding the infinite potentials of the human mind and soul
Yoga asanas is a body positions that has something to do with the sequence of sitting, standing and balancing postures to increase the body flexibility. Yoga asanas provide the individual with multifold benefits physically, mentally and also spiritually. It keeps us physically fit, reduces weight, normalizes blood pressure, controls stress and cholesterol level and improves overall performance of the body and mind. It is very important to be alert and be conscious while doing any asanas. You must be relaxed and concentrate while practicing yoga. There are 84 lakhs of Asanas described by Lord Siva. Among them 84 are the best and among these, 32 are very useful. Here we will mention only a few of the Asanas that are useful for concentration, meditation and for awakening the Kundalini.