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Yoga brick
Block used as yoga prop / From Wikipedia, the free encyclopedia
A yoga brick or yoga block is a smooth block of wood or of firm but comfortable material, such as hard foam rubber or cork, used as a prop in yoga as exercise.
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The use of wooden bricks to assist in alignment was introduced by B. K. S. Iyengar, founder of Iyengar Yoga, and has spread to practices such as Restorative Yoga and Yin Yoga.