These video workouts are designed to put your metabolism into overdrive and burn the fat straight off your body, problem areas included! Burn Fat Fast - 5 Day Challenge The only thing that' s stopping you from being in the best shape of your life is you! This five day challenge is complete with tutorials to help you nail the accuracy of the workout. May 01, · 51 videos Play all BodyRock 30 Day Fat Burn Challenge BodyRock; I Worked out like Chris Hemsworth for 30 Days - Duration: 7: 05. DAY 23 : Fat Burn Challenge Day 23 + Real Time Challenge Day 23.