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He used ChatGPT as his personal trainer and lost 27 kg in just 12 weeks

Just Earth News | @justearthnews | 02 Jan 2026

He used ChatGPT as his personal trainer and lost 27 kg in just 12 weeks

A person checking his weight on a machine. Photo: Unsplash

An X user has revealed how ChatGPT and correct prompting helped him reduce 27 kgs in 12 weeks, surely a move that would inspire people.

Hasan shared his transformation journey on X.

He said he followed no gym or  fancy diet plan in the weight loss journey.

He wrote on X: "I LOST 27 KILOS WITH CHATGPT AS MY PERSONAL TRAINER."

"No gym. No expensive apps. No BS," he said.

"Just daily discipline + prompts that actually gave me structure," he said. Here’s the 7 prompts that can do the same for you: 

1. Body Analysis & Goal Setting Prompt: Here’s my current weight: [insert kg], height: [insert cm], age: [insert age], sex: [M/F], and my goal: lose fat, gain lean muscle. Act as a personal trainer and nutritionist. Create a realistic 12-week fitness and nutrition plan that works without gym access.

2. Customized Weekly Meal Plan Prompt: Design a 7-day meal plan based on 1800 calories per day, with 120g+ of protein, minimal processed carbs, and affordable, easy-to-cook ingredients. Include macros and a grocery list. I don’t eat [insert foods you avoid].

3. Fat-Loss Home Workouts Prompt: Build a 4-day weekly workout plan I can do at home, no equipment. Focus on fat loss, bodyweight strength, and mobility. Each session should be 25–35 mins and progressively get harder over 12 weeks.

4. Craving & Emotional Eating Support Prompt: Give me a list of 10 high-volume, low-calorie snacks under 200 calories that help curb sugar cravings. Also include a short script I can repeat to myself when I feel the urge to binge.

5. 5. Habit Tracking System Prompt: Act as a fitness accountability coach. Ask me 5 daily check-in questions (e.g., Did you follow your meal plan? Workout done? Sleep hours?). Format it as a habit tracker I can fill in every night.

6. Mindset & Consistency Prompts Prompt: Create a morning journaling script I can fill in under 5 minutes that includes: 1) my goal reminder, 2) one action I’ll take today, 3) what I’m grateful for, and 4) a fitness affirmation.

7.Weekly Review + Adjustments Prompt: Every Sunday, help me review my weight, waist measurement, and consistency score from 1–10. Then based on the results, suggest how to adjust my workouts or meals for the next 7 days.