I have trained in martial arts for some time, and was a self-confessed fitness junkie for a very long time before I met Sensei Noah Greenstone - a true Jujutsu master and all-around martial arts expert of the highest level. Noah is a wise, kind and gentle Sensei (ok, sometimes not so gentle…) who always giggles as he twists us into pretzels and who has a Kiai that makes the walls shake. This is a blog about one of his favorite sayings, which has shaped my learning and that of all of his students.