My dad&#x27;s doctor once told him to lose the spare tire, and sent him to a nutritionist, who gave him a diet plan.<p>Some months later, he went back to the nutritionist for a checkup, and the nutritionist was shocked that he&#x27;d actually followed her plan. He became one of those unicorns who kept the weight off until he passed away 30 years later, though he complained that he was always hungry.