"Bshack's Exercise Book for Kids Vol.2: Core" is here! This is a 40 page book that teaches ages 2+ how to work the core. Bshack (me) and The Native Sioux Tribe chief to be, Ake are two young fitness instructors who love to teach kids about a healthy lifestyle. “Bshack’s Exercise Book for Kids” series is geared towards not only fitness, but promoting cultural diversity as well. With every volume and new character from a different culture will Join Bshack to teach kids about fitness and share a little about their culture.