People often complain about having tight hamstrings, or lower back pain, or both. It’s not that I’m a fan of “stretching” but certainly feeling a bit of freedom and flexibility in both affords better posture and more comfort in walking. If you sit a lot – driving, working at a computer, you need to explore this kind of movement. This is a lesson done in sitting. Modifications are offered if you are unable to sit on the floor. As always, listen to your comfort level, stay safe, and you will reap the benefits.