The name, Marichi's pose, comes from the fact that it is dedicated to the sage, Marichi, from Hindu mythology who is also the son of Brahma.
Marichi's pose B provides a powerful stretch for the spine and shoulders. It can also increase flexibility in the hips and hamstrings. It has many internal physical benefits as it massages the organs and glands. In particular, it is said to stimulate the ascending and descending colon, assisting the elimination of waste. It is also said to improve digestion, breathing, and may relieve menstrual pain. Some say that Marichi's pose B strengthens the womb for carrying a child, although it should not be practiced after the second month of pregnancy.
This pose can be modified by holding a strap between the hands if the hands cannot reach far enough to clasp each other. Sitting on a folded blanket can also help by lifting the hips.