We’re going to let you in on a company secret: our sales staff can’t stop thinking about ninjas. We plan ahead for surprise attacks. One of us is a certified “Cooler,” and the Olympics only make us reminisce about Gymkata. Lucky for us, McFarland offers a number of books about real and fictional martial arts, and we’re putting them all on sale. Through the end of January, get 20% off all martial arts titles with the coupon code KUMITE!.