 So the shakuhachi, in a roundabout way, taught me how to create a power and an airflow without having this tension. And it builds more muscles because you've got to hold your mouth in a very small opening while exerting the pressure of airflow. So to do that, you've got to have muscles to keep your mouth in place. So I always would say that 15 minutes of shakuhachi practice was equivalent to 40 minutes of stats practice in terms of how my muscles were getting worked.