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 . It is used as a prop in yoga as exercise. The use of wooden bricks  was introduced by B. K. S. Iyengar, founder of Iyengar Yoga . Their use is now more widespread, including in Restorative Yoga and Yin Yoga.
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. 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.
R
. It is
,
A
to assist in alignment
R
. Their use is now more widespread, including in
, and has spread to practices such as