A tech professional named Hasan has reportedly lost 27kg by using ChatGPT as a personal trainer, without gym access or paid apps. He shared on X that his transformation was achieved through daily discipline and a structured system using seven specific prompts for meal planning, workout routines, and accountability. Hasan emphasized that ChatGPT served as a framework-builder, helping him set realistic goals and reduce decision fatigue around food and exercise, highlighting a novel application of AI in personal fitness.