In Inside the Box, veteran journalist and marathoner T.J. Murphy goes all in to expose the gritty, high-intensity sport of CrossFit®.

T.J. Murphy, NASM CPT, is a veteran journalist and editor who has coauthored two New York Times best sellers, Unbreakable Runner, with Brian MacKenzie, and Ready to Run, with Kelly Starrett. His feature writing has appeared in Outside Magazine, Runner’s World, Spartan.com, and Triathlete Magazine. T.J. is a 2:38 marathoner who has finished five Ironmans. His first foray into writing about general fitness was the book Inside the Box: How CrossFit® Shredded the Rules, Stripped Down the Gym, and Rebuilt My Body. T.J. lives in Boston with his wife, Gretchen, and their two kids, Milo and Maddie.