For GLP-1 Medication Users

The GLP-1 Playbook: Lose Fat, Keep Muscle on GLP-1 Medication

Your free, science-backed guide to preventing muscle loss on Ozempic, Wegovy, Mounjaro or any GLP-1 treatment. Free protein calculator, meal plan, supplement stack & strength training protocol — no sign-up required.

✓ Evidence-Based ✓ 100% Free ✓ No Sign-Up ✓ Works for All GLP-1s
QUICK START

How to Prevent Muscle Loss on GLP-1 Medication: 3 Steps

The complete protocol in 30 seconds

1
Hit Your Protein
Eat 1.6g protein per kg of adjusted body weight, spread across 4-5 meals. Use the calculator below to find your target.
2
Lift Heavy Things
Strength train 2-3x per week with compound movements. Train close to failure. 30-45 minutes is enough.
3
Support Your Body
Stay hydrated (2-3L/day), supplement smart (creatine, vitamin D, magnesium), eat fiber (25-35g/day), and sleep 7+ hours.
📖 Updated weekly
Following an honest GLP-1 journey, week by week
Anonymous, real-time updates from someone going through GLP-1 treatment using this exact protocol — side effects, training, weight, and what actually works.
Read the journey →
📄 Free PDF — no sign-up
Kick Off Your GLP-1 Journey the Right Way
The 4-week playbook to set the standard from day one — full strength program, 28 daily checklists, blood pressure log, weigh-in tracker & 4-week review. One printable file.
Download PDF ↓
THE SCIENCE

Why Muscle Loss Happens on GLP-1 Medications — and How to Stop It

What the clinical trials actually show

40% → <10%
of weight loss as muscle — without vs. with the right protocol
Clinical trials show up to 40% of weight lost on GLP-1s can be lean mass when patients don't resistance train or eat adequate protein. With proper protocol, muscle loss drops below 10% of total weight lost.[1][2][5]
The good news: GLP-1 medications do not directly cause muscle wasting. The lean mass loss is a consequence of the calorie deficit, not the medication itself. This means it's entirely preventable with the right approach: adequate protein + resistance training.[5]
THE PROTOCOL

The GLP-1 Muscle Preservation Protocol: Two Non-Negotiable Rules

Protein triggers muscle repair. Lifting tells your body to keep it.

1

The Protein Threshold

You need a specific dose of protein to trigger muscle protein synthesis, even during calorie restriction.[3]

🎯
Target
1.6g per kg (0.7g per lb) of Adjusted Body Weight
⏰
Frequency
30-40g protein every 3-4 hours across 4-5 meals
💡
Low Appetite?
Use clear whey isolate, EAAs, or liquid protein sources
2

The Mechanical Signal

Lifting heavy sends a signal to your body: “We still need this muscle!” Cardio alone won’t do it.[4][5]

📅
Frequency
2-3 days per week (3 is optimal)
🔥
Intensity
Train close to failure (RPE 7-9). Last 2-3 reps should be hard.
💪
Focus
Full-body compound movements: squat, hinge, press, pull, core
CALCULATOR

GLP-1 Protein Calculator: Find Your Daily Protein Target

Find your personalized daily protein target

Step 1: Ideal Body Weight (IBW)
Metric: IBW = Height(cm) - 100
Imperial: IBW = Height(inches) × 2.2
Step 2: Adjusted Body Weight (ABW)
If weight ≤ IBW: ABW = weight
If weight > IBW: ABW = IBW + 0.25 × (weight - IBW)
Step 3: Daily protein = ABW × 1.6g

Based on Morton et al. (2018): 1.6g/kg optimizes muscle protein synthesis during calorie restriction.[3]

cm
kg
Your Daily Protein Target
0g
Based on 1.6g/kg of your Adjusted Body Weight (0).

Split into meals: Aim for ~0g protein at each of 5 daily meals.
Note: This calculator uses a simplified IBW formula (Broca's index). Clinical tools like the Hamwi or Devine formulas may give slightly different results. The ABW method is an approximation — for medical-grade precision, consult a registered dietitian. This calculator is for educational purposes only and does not constitute medical advice.
MEAL PLAN

GLP-1 Meal Plan: High-Protein Daily Template

A practical template — protein first, always

The “Protein First” rule: At every meal, eat your protein source first, then vegetables, then carbs. If you can’t finish everything, at least you got the protein in.
7 AM
Breakfast
Greek yogurt or quark (250g) + berries + banana. Add chia/flax seeds for fiber.
~25-30g protein
12 PM
Lunch
4 eggs (boiled/scrambled) + vegetables (broccoli, spinach) + 1 fruit. Or: chicken/fish + salad.
~25-30g protein
3 PM
Post-Workout Shake
Whey protein isolate in water + 5g creatine. Best within 1h after training.
~30-40g protein
6 PM
Dinner
Chicken, fish, or lean meat (~150g) + vegetables + whole grain rice or potato. Eat with family — just prioritize the protein portion.
~40-50g protein
8:30 PM
Evening Snack
Greek yogurt or quark (200-250g). Slow-release casein protein supports overnight muscle recovery.
~25-30g protein
~150-170g
Total daily protein from this template
Adjust portions up or down based on your personal calculator result
Low appetite days
Focus on liquid calories: protein shakes, smoothies, bone broth with collagen.
Injection day
Eat a solid protein meal before injecting. Appetite drops most in the 24-48h after.
Eating with family
Same food, just double the protein and halve the carbs if appetite is low.
Budget proteins
Eggs, canned tuna, cottage cheese, quark, and chicken thighs = most protein per dollar.
SUPPLEMENTS

Best Supplements for GLP-1 Medication Users

Protect muscles, manage side effects, fill nutritional gaps

Why supplements matter on GLP-1s: Dramatically reduced food intake means fewer vitamins, minerals, and micronutrients from food alone. Strategic supplementation prevents deficiencies that impair muscle function and recovery.
💪
Creatine Monohydrate
5g/day. The most researched supplement for muscle preservation during calorie restriction. Cheap, safe, and highly effective.[6]
Take daily, any time. Mix in water or shake.
☀️
Vitamin D3
2,000-5,000 IU/day. Supports muscle function, immune system, and bone density. Most people are deficient, especially in winter.
Take with a fat-containing meal for absorption.
⚡
Electrolytes
Daily. GLP-1 side effects (nausea, diarrhea) cause fluid and electrolyte loss. Prevents headaches, cramps, and fatigue.
Add to water. Extra during/after workouts.
🌙
Magnesium Bisglycinate
300-400mg/day. Supports sleep, muscle recovery, reduces cramps. Bisglycinate form is gentle on stomach (important with GI side effects).
Take before bed for sleep benefits.
🐟
Omega-3 Fish Oil
1-2g EPA/DHA per day. Anti-inflammatory, supports heart and joint health. May help preserve muscle protein synthesis.
Take with meals to reduce aftertaste.
💎
Multivitamin
1 tablet/day. Insurance against micronutrient deficiencies (B-vitamins, zinc, iron) when food intake is severely reduced.
Take with food to avoid nausea.
Priority Order (if budget is limited)
1. Creatine → 2. Vitamin D → 3. Electrolytes → 4. Magnesium → 5. Omega-3 → 6. Multivitamin
GUT HEALTH

Managing GLP-1 Side Effects: Fiber, Constipation & Nausea

Constipation is the #1 side effect — and it triggers most other GI issues

Your Fiber Target: 25-35g/day

Most GLP-1 users get less than 15g. Here are the easiest boosters:

🥇
Psyllium Husk
1 tbsp in water, morning & evening = ~10g fiber. The single most effective addition. Drink plenty of water with it.
🌱
Seeds
1 tbsp chia or flax seeds in yogurt/oatmeal = ~4g fiber.
🍞
Whole Grains
Brown rice, oats, whole wheat instead of white versions.
🥫
Legumes
Lentils, chickpeas, beans = 6-8g fiber per half cup + bonus protein.

Managing Side Effects

Most GI side effects are linked to constipation and slow gastric emptying:

Nausea

Eat slowly, smaller portions. Ginger tea (triple ginger) is clinically effective. Avoid fatty food 1-2 days post-injection. Fades after 2-3 weeks on each dose.

Constipation

Psyllium husk + 2-3L water daily. Walking stimulates gut motility. Magnesium bisglycinate helps. If severe, consult your doctor.

Acid Reflux

Don't lie down within 2h of eating. Eat smaller, more frequent meals. Often resolves when constipation is treated.

Fatigue

Usually from eating too little. Hit your protein target. Check vitamin D, B12, iron. Prioritize 7+ hours of sleep.

HYDRATION

Hydration on GLP-1 Medication: Why You Must Drink Intentionally

GLP-1s suppress thirst by up to 40% — you must drink intentionally

Daily Target: 2-3 Liters

35-40ml per kg bodyweight. With high protein: increase to 40-50ml/kg.

⏰
Set Reminders
Phone alarms every 2 hours. Don't wait for thirst.
🎯
Track It
Use a marked water bottle. 1-2 glasses with each meal.
✅
Check Urine
Pale yellow = well-hydrated. Dark = drink more.
⚡
Electrolytes
Add electrolyte powder if experiencing GI side effects causing fluid loss.

Why It’s Critical

Dehydration worsens every side effect and can harm your kidneys on high-protein intake.

1
Kidney Protection
High protein requires water to process metabolic waste products.
2
Reduces Side Effects
Proper hydration lessens nausea, headaches, and constipation.
3
Drug Metabolism
Water is essential for metabolizing both medication and protein.
4
GI Fluid Loss
Nausea and diarrhea cause dehydration that must be replaced.
TRAINING

Strength Training on GLP-1 Medication: The Complete Protocol

Simple, effective, 30-45 minutes per session

Why it’s non-negotiable: Resistance training sends a direct anabolic signal via the mTOR pathway, telling your body to preserve muscle tissue even during calorie restriction. Cardio does not provide this signal.[4][5]
2-3x
days per week
RPE 8
close to failure
30-45
minutes per session
5
movement patterns

The 5 Essential Patterns

Pick ONE exercise from each pattern

⬆️
Press
Push-ups, Bench press, Shoulder press
▶ Watch videos
⬇️
Pull
Pull-ups, Lat pulldown, Rows
▶ Watch videos
🔄
Hinge
Deadlift, KB swings, Hip thrusts
▶ Watch videos
🧎
Squat
Goblet squat, Back squat, Lunges
▶ Watch videos
💎
Core
Plank, Ab wheel, Pallof press
▶ Watch videos

Sample Full-Body Workout (40 min, 2-3x/week)

1. Goblet Squats3 × 8-12▶
2. Dumbbell Shoulder Press3 × 8-12▶
3. Romanian Deadlifts3 × 8-12▶
4. Lat Pulldowns3 × 8-12▶
5. Plank3 × 30-60s▶
🚶 Daily Walking: Your Secret Weapon 30 minutes daily in nature. Not cardio — it’s for wellbeing, stress reduction, and gut motility. Moving meditation, not exercise.
SLEEP

Sleep & GLP-1 Medication: The Hidden Muscle Preserver

Poor sleep undermines everything else in this protocol

Why Sleep Matters on GLP-1s

💪
Muscle Preservation
Growth hormone is released during deep sleep. Poor sleep shifts your body toward muscle breakdown and fat storage.[7]
🍎
Appetite Regulation
Sleep deprivation increases ghrelin (hunger) and decreases leptin (satiety), counteracting your medication.
🏋️
Recovery
Muscle repair happens during sleep. Insufficient rest = poor training adaptation and increased injury risk.
😴
Sleep Apnea
Many people starting GLP-1s have undiagnosed sleep apnea. Weight loss often improves or resolves it. Talk to your doctor if you snore heavily.

Sleep Optimization Tips

7+
Hours Per Night
Aim for 7-9 hours. Non-negotiable for muscle preservation.
⏰
Consistent Schedule
Same bedtime and wake time, even on weekends.
🌙
Magnesium Before Bed
300-400mg magnesium bisglycinate 30-60 min before sleep.
📱
Screen Cutoff
No screens 30-60 min before bed. Blue light suppresses melatonin.
❄️
Cool Room
Keep bedroom at 18-20°C (64-68°F) for optimal sleep quality.
MY JOURNEY

My GLP-1 Journey

A weekly, honest account of life on GLP-1 medication — the good, the hard, and everything in between

About this journal: These are my personal weekly updates — anonymous, unfiltered, and real. I'm not a doctor or dietitian. This is simply what it looks and feels like to go through GLP-1 treatment while trying to do it right: hit protein targets, keep lifting, and preserve muscle. Updated weekly.
Weight Progress
From 118.5 kg (261 lbs) toward 100 kg (220 lbs)
109 kg
240 lbs
Current
−9.5 kg
−20.9 lbs
Total lost
TARGET 100 kg / 220 lbs 119 113 106 100 118.5 118.5 114.5 112 111 110 110 109 Start Week 1 Week 2 Week 3 Week 4 Week 5 Week 6 Week 7
All weights measured Sunday mornings. Values shown in kilograms; lbs equivalents in summary cards. Goal: reach below 100 kg (220 lbs) through sustainable fat loss while preserving muscle mass.
Week 7 June 5, 2026 ⏱ 5 min read

Week 7: Blood Pressure Dropping, Energy Dipping

The plateau broke — 109 kg. But the real story is my blood pressure falling from 140/100 toward normal: the health win I started for, and a signal to call my doctor. A tough, low-energy week handled honestly.

Read full entry →
Week 6 May 29, 2026 ⏱ 5 min read

Week 6: First Plateau, and Why I'm Not Panicking

The scale didn't move this week. After 8.5 kg down in 5 weeks, the first plateau arrived. Why I'm holding the dose, not chasing the number, and what would change my mind later.

Read full entry →
Week 5 May 22, 2026 ⏱ 5 min read

Week 5: Birthdays Survived, a Burger Lesson Learned, and a Hard Truth

110 kg on the scale. Sixth injection done. A week of family birthday cakes survived with small bites, a hamburger misstep taught me about fatty food, and an honest reflection on what this medication actually is.

Read full entry →
Week 4 May 15, 2026 ⏱ 5 min read

Week 4: One Month In — 7.5 kg (16.5 lbs) Down, First Cracks in Discipline

Four weeks on GLP-1 treatment. Down 7.5 kg total, clothes fitting differently, training rolling on. But appetite is starting to whisper again, and a couple of evenings I caved on snacks.

Read full entry →
Week 3 May 8, 2026 ⏱ 4 min read

Week 3: Finding the Rhythm — and Choosing to Stay at 2.5 mg

A quiet, steady week. No side effects, sweet cravings still gone, weight loss settling into a normal pace. I've decided, with my doctor, to stay at 2.5 mg longer.

Read full entry →
Week 2 May 1, 2026 ⏱ 4 min read

Week 2: Second Injection, First Real Drop on the Scale

Second dose at 2.5 mg, no side effects this time, and a surprising number on the scale Sunday morning. Most of it is water, but training feels lighter already.

Read full entry →
Week 1 April 24, 2026 ⏱ 4 min read

Week 1: First Injection, First Side Effects, First Real Test

One week in. First injection done Friday evening. Some mild side effects early on, clear appetite suppression, protocol followed, training maintained.

Read full entry →
Introduction April 8, 2026 ⏱ 3 min read

Before I Start: Why I'm Doing This, and What to Expect

I start GLP-1 treatment this week. I've spent months researching how to do it right — this is my attempt to document what actually happens when science meets real life.

Read full entry →
Coming Next Week 8

Week 8 — Chasing the Energy Back

A doctor's call about blood pressure medication, getting energy levels back up, and hopefully a return to full training. Updated weekly.

FAQ

GLP-1 Medication FAQ: Protein, Muscle Loss & Training

Why do I need more protein on GLP-1 medications?+
GLP-1 medications create a significant calorie deficit, which can cause your body to break down muscle for energy. Without adequate protein (1.6g/kg) and resistance training, up to 40% of weight lost can be lean mass. With the right protocol, this drops below 10%. Higher protein intake triggers muscle protein synthesis even during restriction.[1][2][3]
I’m not hungry. How can I hit my protein target?+
1. Eat protein first at every meal. 2. Spread across 4-5 smaller meals (30-40g each). 3. Use liquid protein when nauseous (clear whey, smoothies, EAAs). 4. Track protein for the first 2 weeks to learn your portions. Focus on hitting protein — let other macros fill in naturally.
Can’t I just do cardio instead of lifting weights?+
No. Cardio burns calories but does not provide the mechanical signal your muscles need to be preserved. Resistance training activates the mTOR pathway, telling your body to keep muscle tissue. Minimum: 2 sessions/week, compound movements, close to failure. You don’t need to gain muscle — just maintain it.[4][5]
Can too much protein damage my kidneys?+
For healthy individuals: no. Decades of research show 1.6g/kg is safe. The concern originated from studies on people with existing kidney disease. If you have kidney issues, consult your doctor first. For everyone else, just stay well-hydrated (2-3L/day).[3]
How do I know if the protocol is working?+
Track monthly: 1) Body composition (photos + measurements, or DEXA/BIA). 2) Strength levels (maintaining your lifts = keeping muscle). 3) How you feel (energy, recovery, mood). Success = losing weight while maintaining or increasing strength.
Do I really need creatine?+
Creatine monohydrate is the most studied supplement in sports nutrition with 30+ years of safety data. During calorie restriction, it helps maintain strength and lean mass. At 5g/day it’s cheap, safe, and one of the most impactful things you can add alongside protein and training.[6]
What is “Adjusted Body Weight” and why does the calculator use it?+
Fat tissue doesn’t need as much protein as muscle. Using your full body weight would overestimate protein needs, making the target unrealistically high (especially with suppressed appetite). ABW = Ideal Weight + 0.25 × (Current − Ideal). This gives a practical, achievable target based on your lean mass plus a portion of excess weight.
REFERENCES

Scientific Sources

Jastreboff AM, Aronne LJ, Ahmad NN, et al. Tirzepatide Once Weekly for the Treatment of Obesity. N Engl J Med. 2022;387:205-216. doi:10.1056/NEJMoa2206038
Wilding JPH, Batterham RL, Calanna S, et al. Once-Weekly Semaglutide in Adults with Overweight or Obesity (STEP 1). N Engl J Med. 2021;384:989-1002. doi:10.1056/NEJMoa2032183
Morton RW, Murphy KT, McKellar SR, et al. A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength. Br J Sports Med. 2018;52:376-384. doi:10.1136/bjsports-2017-097608
Hector AJ, Phillips SM. Protein Recommendations for Weight Loss in Elite Athletes: A Focus on Body Composition and Performance. Int J Sport Nutr Exerc Metab. 2018;28:170-177. doi:10.1123/ijsnem.2017-0273
Oppert JM, Bellicha A, Ciangura C, et al. Exercise training in the management of overweight and obesity in adults. Frontiers Clin Diabetes Healthcare. 2025. Strategies for minimizing muscle loss during use of incretin-mimetic drugs. Diabetes Obes Metab. 2024. PMC11611443
Rawson ES, Volek JS. Effects of creatine supplementation and resistance training on muscle strength and weightlifting performance. J Strength Cond Res. 2003;17:822-831. doi:10.1519/1533-4287
Nedeltcheva AV, Kilkus JM, Imperial J, et al. Insufficient sleep undermines dietary efforts to reduce adiposity. Ann Intern Med. 2010;153:435-441. doi:10.7326/0003-4819-153-7