A system of Hindu philosophy and physical discipline that is becoming increasingly popular throughout the world. The main form of yoga that is practised in the West is hatha-yoga, in which the follower adopts a series of poses, called asanas, and uses a special breathing technique. The practice of yoga maintains flexibility of the body, teaches both physical and mental control, and is a useful relaxation technique. If attempted by people in poor health, or practised incorrectly, yoga may pose certain health hazards, such as back disorders, hypertension (high blood pressure), and glaucoma (increased pressure in the eye).


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