This video is unavailable because we were unable to load a message from our sponsors. If you are using ad-blocking software, please disable it and reload the page. Embed Code Restart Playing WATCH MORE VIDEOS FROM THIS EPISODE > Shaun T, personal trainer and creator of the Insanity Workout, pushes the limits with his MAX interval training program that burns up to 1,000 calories in an hour. E.R. physician Dr. Travis Stork jumps in! ShareTweet