Extended child’s pose provides a gentle stretch for the back of the body and the shoulders by relieving pressure on the spine, while gently stretching the whole of the upper body, right through to the fingertips.
When the knees are wide, it is also said to stimulate the inside of the legs and provide a massage for the internal organs. It allows the rib cage to sink deeper toward the floor. Alternatively, the knees can be closer to support the torso, which can relieve back pain.
Primarily a restful, restorative posture, one can assume extended child's pose during a yoga class as an option when the practice feels too strenuous. A yoga block may be placed under the head or the sit bones to modify the posture.