March 4, 2013
Kimberly Calliari paid $300, lost 51 pounds and won $1,200.
That all happened after she signed up for two challenges on HealthyWage.com, a website that lets dieters bet their own money that they'll meet a weight loss goal. HealthyWage is one of several wagering websites that have launched in the past few years, including DietBet.com and Stickk.com. GymPact, a smartphone app, pushes people to go to the gym or get charged for it. All of the sites work differently, but have the same premise: get healthy or risk losing your cash.
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