In Inside the Box, veteran journalist and marathoner T.J. Murphy goes all in to expose the gritty, high-intensity sport of CrossFit(R). Murphy faced a future with a permanent limp from one too many marathons. Desperate to reclaim his fitness and strength, the 47-year-old signed up for his first CrossFit(R) workout with nothing to lose. Anaerobically blasted by each workout of the day, Murphy discovered a sweat-soaked fitness revolution...