Volume 36, Number 1 / 2010, an article titled «Effect of
different seat support characteristics on the neck and trunk muscles and forward head
posture of visual display terminal workers», indicates an unstable
seat cushion relaxes neck muscles and improves
posture better than a spongy soft - cushion
seat support.
Every yoga asana (pose) has a
different name and includes standing
postures,
seated twists, backbends, arm balances, inversions and core holds.