Prompt Details
Model
Chat - (gpt-5.6)
Token size
606
Example input
[GOAL]: Build muscle (lean bulk), targeting approximately 0.5 lb of gain per week.
[CURRENT TRAINING PHASE & WEEKLY VOLUME]: Hypertrophy accumulation phase, training 5 days/week, 16-18 sets per muscle group weekly (high volume).
[BODY STATS]: 28-year-old male, 5'10", 175 lbs, moderately active outside of training (desk job, occasional walking).
[DIETARY PATTERN & RESTRICTIONS]: No restrictions, omnivore, prefers simple whole-food meals.
[MEDICAL/METABOLIC CONSIDERATIONS]: None reported.
Example output
1. Nutritional Phase Assessment
Current situation:
Training phase: Hypertrophy accumulation
Training frequency: 5 days/week
Weekly volume: 16-18 sets per muscle group (high volume)
Goal: Gain approximately 0.5 lb/week
The training phase is the primary driver of your nutrition plan.
A high-volume hypertrophy block significantly increases glycogen use, recovery demands, and the need for adequate energy availability. Even if your goal were maintenance, this phase would still require relatively high calorie and carbohydrate intake to support performance and recovery.
In your case, the training phase and the goal are aligned rather than competing:
High-volume hypertrophy → increased energy requirements
Lean bulking → moderate caloric surplus
Because there is no conflict between the training phase and your desired rate of gain, the strategy is straightforward:
Maintenance calories → phase-based caloric floor → lean-bulk surplus
Estimated energy needs
Component Estimate
Basal metabolic rate (BMR) ~1,780 kcal
Daily activity +450 kcal
Training expenditure +350-450 kcal
Estimated maintenance ~2,900 kcal
Hypertrophy-phase energy floor ~3,000 kcal
Lean-bulk surplus (+250 kcal/day) 3,250 kcal/day
Target calorie intake: ~3,250 kcal/day
This should produce a weekly weight gain of approximately 0.5 lb, assuming training performance remains high.
2. Macro & Calorie Targets
Daily calorie target
3,250 kcal/day
Protein
Target: 190 g/day
Reasoning:
Body weight: 175 lb
Evidence-based recommendations for hypertrophy generally fall between 0.7-1.0 g/lb
High-volume training increases recovery demands
Calculation:
175 lb × 1.1 g = ~190 g
Calories from protein:
190 g × 4 kcal = 760 kcal
Fat
Target: 85 g/day
Reasoning:
Hormonal function
Joint health
Testosterone production
Dietary flexibility
Calculation:
85 g × 9 kcal = 765 kcal
Carbohydrates
Target: 430 g/day
Reasoning:
Carbohydrates become the dominant variable during an accumulation phase.
High-volume hypertrophy training:
Depletes muscle glycogen
Increases recovery requirements
Benefits from consistently high carbohydrate availability
Remaining calories:
3,250 - (760 + 765) = 1,725 kcal
1,725 ÷ 4 = 431 g carbohydrates
Rounded target:
430 g/day
Daily macro summary
Nutrient Grams Calories
Protein 190 g 760
Carbohydrates 430 g 1,720
Fat 85 g 765
Total — 3,245 kcal
Think of these as performance targets rather than rigid rules.
A range of ±100 calories and ±10 g per macronutrient is completely acceptable.
3. Meal Timing & Nutrient Periodization
Training days
Calories: 3,300-3,400 kcal
Increase carbohydrates around training.
Pre-workout (1-3 hours before)
Targets:
30-50 g protein
60-90 g carbohydrates
Minimal fat
Examples:
Chicken, rice, and fruit
Turkey sandwich with fruit
Greek yogurt, oats, and a banana
Post-workout (within 1-2 hours)
Targets:
35-45 g protein
75-100 g carbohydrates
Moderate fat
Examples:
Lean beef, potatoes, and fruit
Whey protein, rice, and cereal
Chicken, pasta, and vegetables
Rest days
Calories: 3,000-3,100 kcal
Reduce carbohydrates slightly while maintaining protein.
Suggested adjustment:
Nutrient Training day Rest day
Protein 190 g 190 g
Carbohydrates 450 g 350-375 g
Fat 85 g 90-95 g
Weekly calorie intake remains high enough to support muscle growth, while calories are redistributed toward the days that place the greatest demands on recovery.
Meal frequency
Aim for 4-5 meals daily.
A simple distribution might look like this:
Meal Protein
Breakfast 40 g
Lunch 40 g
Pre-workout 35 g
Post-workout 40 g
Dinner 35 g
This approach spreads muscle protein synthesis across the day instead of concentrating protein into one or two meals.
4. Food Selection Framework
You prefer simple whole-food meals, which fits this phase extremely well.
Protein sources
Aim for 35-45 g per meal.
Examples:
Chicken breast
Ground beef
Steak
Eggs
Greek yogurt
Cottage cheese
Salmon
Tuna
Whey protein
Carbohydrate sources
Your training phase makes these foods especially important.
Examples:
Rice
Potatoes
Oatmeal
Pasta
Whole-grain bread
Fruit
Beans
Cereal
Fat sources
Examples:
Avocados
Nuts
Nut butter
Olive oil
Whole eggs
Salmon
Example training-day menu (~3,250 kcal)
Meal Example
Breakfast Oatmeal, eggs, Greek yogurt, berries
Lunch Chicken, rice, vegetables
Pre-workout Turkey sandwich, banana
Post-workout Whey protein, rice, cereal
Dinner Steak, potatoes, salad
Evening snack Cottage cheese, fruit, almonds
Plate method
For your main meals:
¼ plate: protein
½ plate: carbohydrates
¼ plate: vegetables and healthy fats
During this high-volume block, don't be afraid of larger carbohydrate portions.
5. Medical/Metabolic Adjustments
None required.
You reported:
No medical conditions
No metabolic disorders
No dietary restrictions
Therefore, no modifications were made to the calorie or macronutrient calculations.
The plan was built entirely around:
Training-phase energy demands
Muscle-gain goals
Food preferences
6. Monitoring & Adjustment Triggers
Don't wait until the end of the hypertrophy block to make changes.
Recalculate intake if any of the following occur:
Metric Adjustment trigger
Body weight Less than 0.25 lb/week gained for 2 consecutive weeks
Body weight More than 0.75 lb/week gained for 2 consecutive weeks
Training performance Reps decreasing across multiple exercises
Recovery Persistent soreness lasting >72 hours
Energy Chronic fatigue or poor workouts
Hunger Excessive hunger despite meeting calorie targets
Adjustment rules
If weight gain is too slow:
Increase calories by 150-200 kcal/day, primarily from carbohydrates.
If weight gain is too fast:
Decrease calories by 100-150 kcal/day, primarily from carbohydrates.
If performance stalls despite appropriate weight gain:
Add 25-50 g of carbohydrates around training before changing protein or fat intake.
If body-fat accumulation accelerates:
Reduce carbohydrates by 25-40 g/day while keeping protein constant.
The most important metric during this phase isn't body weight by itself—it's the combination of weekly weight gain, gym performance, recovery, and workout quality. A useful next step would be to track your morning body weight and your top sets for the major lifts for the next 2-3 weeks so you can fine-tune calorie intake before moving into the next training phase.
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GPT-5.6
Get a nutrition plan matched to your exact training phase, not a generic calculator. This ChatGPT prompt sets calorie and macro targets based on training volume, goal, and body stats, then adjusts for medical or metabolic conditions before diet restrictions ever enter the picture. Includes meal timing around workouts, food selection within your dietary pattern, and clear triggers for when to recalculate as your training phase changes.
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Added 12 hours ago
