Van Daff loves to see people who have lost a significant amount of weight become trainers.

CNN: Mom's last words inspire 85-pound loss

Unlike the competitive nature of NBC's "The Biggest Loser, " where producers engage personal trainers and nutritionists to assist contestants in their weight loss, the Cole family appear to be going it alone on the show.

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Horse-trainers have offered gentler hours, higher pay and more generous weight limits, to no avail.

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Personal trainers provide clients with programs to achieve their goals, Van Daff says, whether that's weight loss, muscle building or overall fitness.

CNN: Mom's last words inspire 85-pound loss