Jen, Sharon and Jessica started the Diet Challenge in March 2006, when each of them decided that it was time to get healthy. Since the challenge started, Janelle, Bambi, Indera, Shanese, and Alexandra have joined.

The challenge works like this: at the end of a predetermined time frame (generally 6 weeks), the challengers all weigh in. The person who has lost the greatest percentage of weight is declared the winner and wins a predetermined prize from all the other dieters.