Week 4

Jan 24, 2012 on NBC at 9:00 PM

Watch The Biggest Loser S13E04 online

Summary

The teams compete for exclusive use of the gym during a battering-ram challenge. Bob and Dolvett, meanwhile, try to get through to contestants they feel aren't putting in enough effort to shed pounds.

Previous episode

Week 3
Season 13 Episode 3

Jan 17, 2012

Next episode

Week 5
Season 13 Episode 5

Jan 31, 2012