JILLIAN MICHAELS is one of the world’s most recognizable fitness trainers thanks to her work on the NBC series THE BIGGEST LOSER.  The name of the reality series (though catchy) might not be fitting, however, since the contestants on the program all take a huge shot at changing their lives. 

In the attached clip, MICHAELS talks about why she continues to be a part of THE BIGGEST LOSER: 

THE BIGGEST LOSER: COUPLES premieres Tuesday night with a 2-hour episode