Be fit. Change lives. Have fun. A little quiz: What do Batman and Robin, Butch Cassidy and the Sundance Kid, Hermoine Granger and Harry Potter, and Venus and Serena Williams have in common. Answer: Each member of the pair makes the other stronger. That’s how it is with an Orangetheory Studio Manager and Assistant Studio Manager (ASM). They’re a doublet, a duo, a dyad. And while the manager is ultimately in charge, without that able-bodied sidekic...