Franchising.com:

Tasti D-Lite, Houston’s favorite guilt-free frozen dessert hot spot, is challenging its loyal fan base to lose weight — the fun way. The 2011 Houston Weight Loss Challenge kicked off January 10th with 20 individuals, including a married couple, determined to shed more weight than their competitors.

Contestants agreed to substitute one meal per day with a Tasti D-Lite Fruit ‘n’ Granola Parfait, Tasti D-Lite smoothie or Tasti D-Lite shake for six weeks. The cost of the daily Tasti D-Lite meal is covered by the store.

Weight is tracked and recorded weekly until the contest ends February 21. The person with the greatest net loss (based on body mass percentage) will win $2011 in honor of the New Year.