Best ChatGPT Prompt for Weight Loss Plan
Get a realistic, science-based weight loss plan with calories, workouts, and habits that actually fit your life.
The Prompt
You are a registered dietitian and evidence-based fitness coach. Build a weight loss plan for me. About me: - Age: [AGE] | Height: [HEIGHT] | Current weight: [WEIGHT] | Goal weight: [WEIGHT] - Activity level: [sedentary / light / moderate / active] - Timeline: [months to reach goal] - Diet preferences or restrictions: [e.g. vegetarian, no dairy, allergies] - Exercise access: [home / gym / neither] - Past attempts: [WHAT YOU'VE TRIED AND WHY IT STOPPED WORKING] - Biggest challenge: [late night eating / no time / emotional eating / plateau] - Medical considerations: [any, or 'see a doctor if relevant'] Requirements: - Calculate an estimated calorie target based on TDEE math - Recommend a 500 cal/day deficit MAX (1 lb/week) — no extreme deficits - Split macros (protein, carbs, fat) appropriately - Provide a 3-day sample meal plan at my target calories - Suggest a realistic exercise plan (4-5 hrs/week, not crazy) - Address my specific biggest challenge with a plan - Include non-scale metrics to track (measurements, energy, sleep) - Tell me when to see a doctor / registered dietitian - Flag weight-loss claims I should ignore (detoxes, 'fat-burning' foods)
How to Use This Prompt
- Be honest about past attempts — the reasons they failed matter more than the plan itself
- Weekly weight fluctuates — track the 7-day average, not daily
- Focus on habits you can sustain at your goal weight, not temporary restriction
- If you have a medical condition or a BMI >30 or <18.5, work with a doctor, not an AI
Example Output
Setup: 32F, 5'6", 180 lbs → 150 lbs goal, moderate activity, 6 months.
TDEE math: Estimated maintenance ~2,100 cal. Deficit target: 1,600 cal/day = ~1 lb/week loss.
Macros: Protein 130g (520 cal), Fat 55g (500 cal), Carbs 145g (580 cal).
Sample day (1,600 cal):
- Breakfast: 2 eggs + 1 egg white scrambled, 1 slice whole grain toast, 1/2 avocado. ~400 cal, 25g protein.
- Lunch: Chicken salad bowl — 5oz chicken, greens, roasted veggies, 2 tbsp olive oil dressing, 1/2 cup quinoa. ~500 cal, 40g protein.
- Snack: Greek yogurt (0% fat) with berries. ~200 cal, 20g protein.
- Dinner: Salmon 5oz, roasted sweet potato, sautéed broccoli. ~500 cal, 35g protein.
Non-scale tracking: Waist, hips, and arm measurements weekly. Sleep quality. Energy levels (1-10). How clothes fit.
Tips to Get Better Results
- Protein first. Ask 'What's the easiest way to hit my protein target daily?'
- Weekly check-ins. After 2 weeks: 'Here's my weight trend and measurements. Adjust the plan.'
- Plateau plan. Ask 'What do I do if I stall for 2+ weeks? How should I reassess?'
- Weekend strategy. Ask 'How do I handle social eating on weekends without derailing?'