It's down to the final four - Rob, Sonya, Woody and Toma - and after 17 weeks, someone's dream of becoming a finalist comes to an end. The contestants walk into the gym to see Jenna Wolfe, the lifestyle and fitness correspondent for the Today Show. Despite being seven months pregnant, Jenna shows the players how to work out without a gym. At the same time, Bob Harper gives the other trainers a workout of a lifetime.