A tech professional named Hasan claims to have lost 27 kilograms in three months by using ChatGPT as a personal fitness coach. He shared on X that his transformation involved daily discipline and a structured system built with AI prompts, replacing the need for a gym or expensive apps. Hasan detailed seven specific prompts he used to plan workouts, structure meals, manage cravings, and maintain accountability, emphasizing ChatGPT's role in building a consistent framework rather than providing motivation.