Comment by heisgone

The biggest challenge is that it's a very slow process and most people don't have the patience for it. I have been practicing Vipassana for 14 years, including all day long body awareness (so, not only on cushion, but basically integrating Vipassana to normal activities like work) and it's took close to a decade to be satisfied by the results. That being said, permanent relaxation of muscle is really what you gain from it. There have been period with faster developpement but there are up liits to progress. Notably, the release of muscle release all sort of chemicals in the blood streams, which would make my body smell during intense practice and if we progress too fast, we get bizarre side effects. For instance, relaxation of some of my muscles meant that other muscles in my legs had to be "trained" when walking, or I would be in pain for a while, etc, etc.