The Biggest Loser Season 12 Episode 4
Week 4
Contestants from past seasons return to inspire the current players; after a challenge where the teams battle the elements, the winners receive a special bonus prize; contestants face elimination.
12 - 13Week 13 - FinaleDec. 13, 2011- 12 - 12Week 12Dec. 06, 2011
- 12 - 11Week 11 - Makeover WeekNov. 29, 2011
- 12 - 10Week 10Nov. 22, 2011
- 12 - 9Week 9Nov. 15, 2011
- 12 - 8Week 8Nov. 08, 2011
- 12 - 7Week 7Nov. 01, 2011
- 12 - 6Week 6Oct. 25, 2011
- 12 - 5Week 5Oct. 18, 2011
- 12 - 4Week 4Oct. 11, 2011
- 12 - 3Week 3Oct. 04, 2011
- 12 - 2Week 2Sep. 27, 2011
- 12 - 1Week 1Sep. 20, 2011
