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- Season 13 overviewJan 3-May 1, 201218 episodesSeason 13 episodes1. S13 E1 Jan 3, 2012
- The contestants arrive in pairs and then are split up into two competing teams.
- 2. S13 E2 Jan 10, 2012
- Representatives from each team bid on how much weight they think their teams will lose.
- 3. S13 E3 Jan 17, 2012
- Chinese buffet temptation; face -off challenge in the gym; a player makes a shocking decision.
- 4. S13 E4 Jan 24, 2012
- The teams compete in a battering ram challenge to win rights to the gym.
- 5. S13 E5 Jan 31, 2012
- The red and black teams compete in challenges involving medicine balls and a trampoline.
- 6. S13 E6 Feb 7, 2012
- The losers of a dunk tank challenge face a week without a trainer.
- 7. S13 E7 Feb 14, 2012
- One player from each team goes home with a trainer; the teams face an obstacle course.
- 8. S13 E8 Feb 21, 2012
- The winner of a food challenge gets the power to rearrange the teams.
- 9. S13 E9 Feb 28, 2012
- After the remaining contestants test their knowledge during a trip home, one player wins immunity.
- 10. S13 E10 Mar 6, 2012
- The contestants swap trainers for a week; the contestants search for weight plates in a mud pit.
- 11. S13 E11 Mar 13, 2012
- After a tug-of-war competition, one contestant receives a shopping spree with Jessica Simpson.
- 12. S13 E12 Mar 20, 2012
- The contestants compete for immunity and learn how to surf from "Soul Surfer" Bethany Hamilton.
- 13. S13 E13 Mar 27, 2012
- Dolvett and Bob try to prove that exercise is not boring; truck-loading challenge.
- 14. S13 E14 Apr 3, 2012
- Stylist Jeannie Mai and hair stylist Ken Paves gives the contestants makeovers.
- 15. S13 E15 Apr 10, 2012
- Michelle Obama talks to the contestants about health and fitness, then joins them in a workout.
- 16. S13 E16 Apr 17, 2012
- The contestants review their progress; one player wins a new car.
- 17. S13 E17 Apr 24, 2012
- Eliminated contestants return to compete in a four-part challenge; the third finalist is revealed.
- 18. S13 E18 May 1, 2012
- Former contestants reunite and reveal how much weight they have lost; the winner is announced.