The Japanese word kaizen is heard often in boardrooms, quality circles, and sports. Though usually translated as 'continuous improvement' a more accurate meaning is 'change for the good' and represents a way of working rather than a specific thing. It is a touchstone in sport with teams, clubs, and national associations all talking about it, setting goals for improvement, and attempting to incorporate the concept into their culture. So, what is it and how does a commitment to improvement translate into practical policies and action in sport?