Vasisthasana is a challenging asana that strengthens the abdomen, legs and arms. The name comes from the Sanskrit, vasistha, meaning “wealthy,” and asana, meaning “pose.” Vasishtha is also the name of several different yoga sages, including an author of Vedic hymns and one of the seven rishis.
Vasisthasana is typically entered from straight-arm plank pose. Then the yogi lifts one arm toward the sky and rotates the body until it faces straight ahead. In this pose, the body should resemble a cross tilted on its side.
Vasisthasana is also known as side plank pose in English.