This class includes some poses that work deeply into the quadriceps and hip flexors. Improving mobility in these muscles can have some general benefits such as helping to improve posture and reducing the risk of of injury to knees and the lower back. For dedicated yoga practitioners the quadriceps and hip flexors are key muscles that can either help or hinder access to more advanced asanas. Improving mobility in these muscles can help to promote more freedom in poses that involve challenging connections between the legs and the upper torso. A broader range of asanas from each of the main pose groups can become more accessible if progress is made in this area.