Keto X Factor Reviews unfortunately, cash is only a short-term tactic. Almost all of the participants in the above study regained at least some of the weight after seven months. So what does all this mean? Well, if you're an employer wanting to keep insurance costs down, cash incentives for your employees might be a solution. If you're a parent with an obese child, bribing him or her by the pound might save a life. I know it sounds kind of tacky, but if it works, it just might be the best diet ever.