Greg Amundson has traveled around the world teaching CrossFit movement, theory, and application for over 15 years. He is the owner and founder of CrossFit Amundson, Krav Maga Santa Cruz, and Satvana Yoga, all located in Santa Cruz, California.
T.J. Murphy is a veteran journalist, endurance athlete, CrossFitter, and former editorial director of Triathlete, Inside Triathlon, and Competitor magazines. He is author of Triathlete Magazine's Guide to Finishing Your First Triathlon and contributor to Start to Finish: 24 Weeks to an Endurance Triathlon. His writing has also appeared in Outside magazine and Runner's World. He is a five-time Ironmanà €š ® finisher and a 2:38 marathoner.