Bobby, a 55-year-old New Jersey truck driver, dropped 50 pounds using GLP-1 medication and normalized all his blood markers for the first time in 30 years. But at 1,700–1,900 calories, 8,000 steps, and 5 days of lifting per week, he'd painted himself into a metabolic corner. The prescription: MAPS 15, a slow reverse diet to 3,000 calories over 3 months, and a mindset shift from cutting to building.