The aim behind all the hatha yoga postures is to be able to sit in one steady, comfortable position for meditation. It is only in a steady posture that you can have a good meditation. A body filled with toxins, weak muscles and jumpy nerves will not be able to stay quiet for any length of time. But the hatha yoga postures eliminate the toxins and give strength and steadiness. When the body is healthy and supple, you can easily sit with the mind still and peaceful. As you begin to control the body and its movements, that control will carry over to the mind.
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