Fish pose is a highly beneficial posture because it counteracts the forward rounding of the shoulders that many people experience when they spend a lot of time sitting at desks or driving. It pushes the upper back and shoulders in a different direction and can help to imprint a new movement pattern.
There are many physical benefits of fish pose. It strengthens the muscles of the back while stretching the pectoral muscles, the intercostal muscles and the whole abdomen. It is also said to stimulate the thyroid gland and is considered a therapeutic posture for many conditions, including constipation, back pain and menstrual pain.
Fish pose may be modified by supporting the back with a rolled blanket. A blanket can also be placed under the head. Alternatively, this pose can be deepened by stretching the arms in front of the body, with the palms pressed together in prayer position. Those with neck or back injuries should practice this pose with caution.