When people stop these medications, the weight tends to come back. A 2026 BMJ review of 37 studies projected a return to starting weight about 1.5–1.7 years after stopping.5 In trials, roughly 25–40% of weight lost was lean mass, not fat.1,2 What holds the line is what you build while the medication is working: muscle and habits. Keep the Muscle is the 78-page program that builds both, made for a tiny appetite and bad knees, with or without a gym.
PDF download at launch30-day money-back guaranteeHome or gym, 12 weeks each
The part nobody warns you about
Losing it is the easy part. Keeping it off is a two-year job.
The medication quiets hunger while you're on it. Your body has a long memory, though, and what happens next depends on what you build now. This is what the research says. None of it is a reason to change your medication; that's between you and your doctor. It's a reason to use this time well.
~66 daysHabits
New habits take about two months to feel automatic.
In a real-world habit study, the median time to automaticity was 66 days (range 18 to 254). Missing a single day didn't derail it.6
1 year+Hunger
Your hunger hormones keep pushing back.
A year after diet-induced weight loss, hunger and fullness hormones still hadn't returned to their starting levels.7
⅔Within 1 year of stopping
Two-thirds of the lost weight came back.
In the STEP 1 extension, people who stopped semaglutide regained about two-thirds of the weight they'd lost within a year.3
+14%52 weeks
Regained on placebo in SURMOUNT-4.
People switched from tirzepatide to placebo regained 14% of body weight over 52 weeks. Those who continued lost another 5.5%.4
1.5–1.7 yrsBack to the start
The average projection after stopping.
A 2026 BMJ review of 37 studies projected a return to starting weight about 1.7 years after stopping weight-loss medication, and about 1.5 years for newer drugs like semaglutide and tirzepatide. Regain was faster than after diet-and-lifestyle programs.5
2–5 yearsThen it gets easier
Hold it long enough and the odds improve.
In the National Weight Control Registry, people who had kept weight off for 2–5 years had much better odds of long-term success, and maintaining it took less effort over time.8,9
6 yearsMetabolism
Your metabolism remembers.
Six years after The Biggest Loser, contestants' resting metabolism was still about 500 calories a day lower than expected for their size.10
The shot can quiet the hunger. It can't build your muscle or your habits. Those are yours to build, and they're what you carry into year two, whatever you and your doctor decide about the medication.
Study averages, not predictions for any one person. Full sources at the bottom of the page.
Pick your finish line
Lighter isn't the goal. Lighter and strong is.
Two people can lose the same weight and end up in very different places. One loses fat and muscle and ends up smaller, but weaker and primed to regain. The other protects their muscle and ends up lighter and stronger. Protein and strength training are what make the difference.
Starting point
Where you started
Higher weight, lower energy, joints that complain.
Not the goal
Lighter, but weaker
Fat and muscle gone. Smaller, but softer and tired, with a slower metabolism. Easy to regain from.
The goal
Lighter and strong
Fat down, muscle kept. Stronger on the stairs and better set up to hold the weight off.
AI-generated illustrations, not real people, and not a promise of any result. Individual results vary.
The real question
Who do you want to be in two years?
Picture yourself 24 months from now. Same medication journey, two very different people.
Two years from now
Lighter, stronger, and not starting over.
Still hitting her protein most days. Still training three times a week. Not because the medication is doing it, but because the habits are hers now.
AI-generated illustration, not a real person or a promised result.
Version A
Lost the weight, but a lot of it was muscle
Ate whatever fit, because nothing sounded good
Never built a routine; the medication did the work
When appetite came back, so did the old snacks and the weight
Version B
Hit a protein number most days, even on a tiny appetite
Trained 3 times a week and got stronger while getting lighter
Has go-to swaps for chocolate, chips and late-night cravings
Has a plan for month 13, 18 and 24, not just week 1
Every week you lose weight without enough protein and strength work is a week some of that weight can come from muscle. The best time to build Version B is now, while the medication is making the food part easier.
Why muscle matters
The scale is going down. Make sure it's fat.
When you're barely eating, your body doesn't only burn fat. Without enough protein and some kind of strength work, it breaks down muscle too. The scale can't tell the difference, so most people don't notice until they're tired, weaker and softer than they expected.
25–40%
of weight lost was lean mass
Across body-composition studies of semaglutide and tirzepatide. Lean mass includes muscle.1,2
Weaker
Stairs, groceries, the floor
Losing strength is easy to miss on the scale and hard to miss in daily life: carrying bags, climbing stairs, getting up off the floor.
Softer
Smaller, but not firmer
Lose muscle along with the fat and you end up "skinny-fat": a smaller size without the shape or tone you were working toward.
Regain
Harder to keep it off
Muscle burns energy even at rest. Lose it, and keeping the weight off gets harder once your appetite comes back.5,10
Sources at the bottom of the page. Individual results vary.
Why the usual advice doesn't work
"Eat more protein" is easy to say. Try it with no appetite.
You've probably heard all three of these. Each one is right in theory and useless on a day when half a yogurt feels like a full meal.
Small plates. Big protein.Greek yogurt parfait · 20 gEgg & cheese box · 19 g
Food images are AI-generated illustrations.
"Just eat more protein."
How much? And how do you get it in when a chicken breast feels like a Thanksgiving dinner?
A personal number, split into 4 mini-meals, using the 40 foods with the most protein per bite.
"Start lifting weights."
With bad knees, no gym membership and zero interest in becoming a gym person?
Pick a track: 12 weeks at home with no equipment, or 12 weeks on beginner gym machines. No jumping, no deep squats.
"Track your macros."
Apps, scales and spreadsheets for every bite. Most people quit within a week.
You track one number and one checkbox a day. The menus do the math for you.
How it works
Two levers. Two years.
A joint advisory from four obesity and nutrition societies says people on GLP-1 medications should prioritize protein and pair it with strength training, because protein alone isn't enough.11 The program makes both doable, starting this week and lasting through month 24.
Get your number
Two minutes with the calculator below for an estimate of your daily protein target, to discuss with your doctor or dietitian.
Eat it in mini-meals
Follow the 28-day plan, cook from 50 recipes, and use 30 swaps when the chocolate, chip or late-night cravings hit.
Train 3x a week, then hold it
A 12-week home or gym program that gets a little harder each week. Then the 2-Year Plan keeps you on track through maintenance.
Training
Home or gym. Pick your track and start this week.
Both programs run 12 weeks, 3 days a week, and get a little harder every week so your muscles keep a reason to stay. No jumping, no lunges, no deep squats.
Home track · no equipment
12-week home bodyweight program
A sturdy chair, a wall, a counter and the floor. That's it.
3 routines, about 20–25 minutes each
Knee-friendly versions of every move
Sets, reps and how hard it should feel, week by week
Gym track · beginner-friendly
12-week gym program
Machines and dumbbells, laid out so you never wonder what to do next.
3 days a week, 5 exercises a day
Knee-friendly setups (leg press, rows, presses)
Deload week and a week-12 strength check
Plus an 18-exercise library with form cues and simple diagrams. Images are AI-generated illustrations, not real people.
Free tool
Estimate your protein number
Uses the common 1.2–1.6 g per kg of goal body weight range. This is an estimate to discuss with your doctor or dietitian, not a prescription. Check with them before raising your protein, especially if you have kidney disease or another medical condition.
Your estimated daily target
108g protein / day
Per meal27 g × 4
Start here in week 185 g
What one meal looks like¾ cup Greek yogurt + ½ scoop whey
Week 1 starts at a lower floor and builds up, because nobody goes from 40 g to 110 g overnight. The 28-day menus run around 100 g a day, with add-on boosters to reach 120 or 140 g.
An educational estimate only. Talk to your doctor or dietitian about the right target for you.
Most "GLP-1 guides" are a list of protein foods and a pep talk. This is the whole system: what to eat, when, what to eat instead of junk, how to train at home or at the gym, and what to do in month 13 when your appetite starts coming back. It reads well on your phone and prints cleanly.
Part 3 · The 28-day plan4 weeks of menus + 4 grocery listsp. 20
Part 4 · Training12-week home + 12-week gym, 18-exercise libraryp. 30
Part 5 · 50 recipesBreakfast to chocolate fixesp. 38
Part 6 · Real lifeEating out, travel, holidays, alcoholp. 51
Part 7 · The 2-year planMonths 1–24, warning signs, maintenancep. 56
Part 8 · Trackers12 printable pagesp. 64
Real pages from the program. Page numbers match the PDF.
The junk-food replacement system
30 protein-forward swaps for 10 cravings: chocolate, candy, chips, ice cream, fast food, soda, late-night snacking, pastries, pizza and fries. Each says why it works.
Meal & snack timing
When to eat with a tiny appetite, what to eat before and after training, and an evening plan for the sweet tooth.
Two 12-week training tracks
Home: chair, wall, counter and floor, no equipment. Gym: beginner machines and dumbbells, 3 days a week. Both knee-friendly, with sets, reps and how hard it should feel.
50 recipes
Breakfasts, lunches, dinners, snacks and grab-and-go, desserts and chocolate fixes, and shakes. Protein and calories per serving on every one.
The 2-Year Plan
Five phases and a month-by-month roadmap from month 1 to 24, a habit system, regain warning signs and what to do, and how to find your maintenance calories.
Real life
Eating out at 10 kinds of places, travel, holidays and celebrations, and alcohol, so one weekend doesn't undo a month.
Protein number, 40 foods & rough days
A worksheet for your number and a 2-week ramp, 40 foods ranked by protein per bite, 10 small-appetite rules and a rough-day menu.
12 printable trackers
30-day tracker, weekly habits, craving log, home and gym 12-week logs, a 24-month weigh-in log, strength check-ins and a monthly review.
50 recipes
Food you actually want to eat. Protein you can actually finish.
Breakfasts, lunches, dinners, grab-and-go snacks, shakes and 9 desserts and chocolate fixes. Every recipe lists protein and calories per serving, and most take under 15 minutes.
Batch-cook week
Cook once. Eat protein all week.
Week 3 of the 28-day plan is built around one batch-cook session: shredded chicken, turkey chili, egg muffins and meatballs that turn into 4 days of small meals.
Each week comes with its own grocery list, sorted by store section.
Protein pancakes
28 g protein · 330 kcal
Small chicken burrito bowl
28 g protein · 380 kcal
Sheet-pan salmon
29 g protein · 320 kcal
Mini shrimp poke bowl
27 g protein · 350 kcal
Turkey meatballs marinara
28 g protein · 300 kcal
Baked cod tacos
25 g protein · 300 kcal
Protein brownie mug cake
25 g protein · 220 kcal
Strawberry cheesecake shake
31 g protein · 240 kcal
Recipe images are AI-generated illustrations. Protein and calories are approximate; brands vary.
Add the frozen banana, whey and peanut butter powder to a food processor or strong blender.
Pour in the milk. Pulse, scraping down the sides, until thick and smooth like soft-serve (1–2 min). Add more milk only 1 tsp at a time.
Scoop into a bowl, add the toppings and eat right away, or freeze 30 minutes for firmer scoops.
Why it works: it hits the same cold, creamy, chocolate craving as a pint of ice cream, with roughly the protein of a chicken breast. Swap it in for the after-dinner ice cream habit (Section 07).
Protein brownie mug cake
1 mug · 25 g protein · 220 kcal
1 scoop chocolate whey
1 tbsp cocoa, 1 tbsp flour
1 egg white, 3 tbsp milk
½ tsp baking powder
For educational purposes only. Not medical advice. Talk to your doctor before changing your diet, exercise, or medication.KEEP THE MUSCLE · 47
Get all 50 recipes
Plus the 28-day meal plan, both 12-week training programs and the 2-Year Plan. 78 pages.
No weird ingredients and no 45-minute recipes. Small plates that add up.
Day 10 · Week 2No-cook week · ~120 g plan
Meal 1
Skyr with a spoon of peanut butter powder and berries
21 g
Meal 2
Rotisserie chicken, cheese stick and a few crackers
31 g
Meal 3
Tuna salad (4 oz) in lettuce cups with cherry tomatoes
26 g
Meal 4
Ready-to-drink protein shake, sipped over 30 min
30 g
Booster
Turkey jerky (1 oz), if you've got room
12 g
Total
The menus set a protein floor, not a calorie target. Eat more if you're hungry; your doctor or dietitian can help set calories.
120 g
Home track · Routine AWeeks 3–4 · no equipment
1
Chair sit-to-stand
3 × 10–12
2
Incline push-up (counter)
3 × 10–12
3
Glute bridge
3 × 10–12
4
Prone Y-raise / superman
3 × 10–12
5
Dead bug
3 × 10–12
Time
About 20–25 minutes. Stop with 2–3 good reps left
3x/wk
Name changed for privacy. Portrait is an AI-generated illustration, not a photo of Phil. Real story, real numbers.
Built from experience
241→215
pounds, on a GLP-1 medication
Trains martial artsOn the mats every week
Bad kneesSo no squats, jumps or lunges
Hates the gymSo there's a no-equipment track
Tiny appetiteThe meals are built for that
Why Phil needed this
Phil trains martial arts. When he started a GLP-1 medication, food stopped being interesting almost overnight. The scale wasn't what worried him. Getting weaker on the mats, and gaining it all back later, did.
His knees are shot and he'd rather do almost anything than spend an hour in a commercial gym. So the plan was built the way you'd build any good training plan: one number to hit, a simple way to hit it, short sessions that don't wreck the knees, and a plan for what comes after. This program is that plan, written out in full, for anyone in the same spot.
Phil's weight loss came from the medication; the program is about keeping strength and habits. Your results will vary. Phil's results are his own and not typical. We're not doctors or registered dietitians. This program covers food and training habits that go alongside your prescriber's care, not instead of it.
This is for you if
You're using or starting a GLP-1 medication and want to keep your strength
Your appetite is so small that "eat more protein" feels impossible
You want a plan that works at home with no equipment, or at a regular gym
You want one plan for the next two years, not 40 tabs of Reddit threads
This isn't for you if
You want advice on doses or which medication to take. That's your prescriber's job
You have kidney disease and haven't talked to your doctor about protein
You're looking for a bodybuilding or competition program
You're under 18, pregnant or breastfeeding
Get the plan
78 pages for less than a week of protein shakes.
You're already investing a lot of money and effort in losing this weight. This is the part that helps you keep it. Yours to keep, with free updates to this edition.
Keep the Muscle: the complete 78-page program
$19one-time · launch price
That's about 25 cents a page, or less than one meal out.
The 2-year truth + identity worksheetwhy keeping it off takes two years, and who you're building
28-day small-appetite meal plan4 mini-meals a day, 4 grocery lists, rough-day menu
50 recipesprotein and calories per serving, including 9 desserts and chocolate fixes
Junk-food replacement system30 swaps for 10 cravings, plus meal and snack timing
12-week home and 12-week gym programsknee-friendly, with an 18-exercise library
Eating out, travel, holidays and alcohol
12 printable tracker pagesplus vegetarian swaps
The 2-Year Plan ("After the Shot")month-by-month roadmap 1–24, regain warning signs, maintenance adjustments, and what to do when your appetite returns
Checkout opens at launch. Join the list and we'll email you when it does. Not medical advice · Not a substitute for your doctor Terms & refunds · Privacy
I'm barely eating. Can I really hit 100+ grams of protein?
Not on day one, and the plan doesn't ask you to. Week 1 starts at a lower floor and ramps up over two weeks. The menus lean on foods with the most protein per bite, plus drinkable options you can sip over 30 minutes. That's how a small appetite gets to a big number.
I have bad knees and I've never lifted. Is the strength part safe for me?
Every routine was picked to avoid deep knee bends, jumping and lunges, and each exercise has an easier version. You start with two sets and build slowly. If something hurts, you stop and swap it. If you have a specific injury, check with a physical therapist first.
Do I need a gym or equipment?
No. The home track uses only a sturdy chair, a wall, a counter and the floor. If you do have a gym, there's a separate 12-week gym track using beginner machines and dumbbells. Pick one, or switch later.
Do I have to stop my medication to use this?
No. This program never tells you to start, stop or change any medication or dose. That's a decision for you and your doctor. The program works alongside your treatment, whatever you decide.
Will this keep the weight off?
We can't promise that, and nobody honestly can. What the research shows is that keeping weight off is a long-term project, and that protein, strength training and solid habits are what you control. This program gives you a specific plan for each of those, for two years.
Which medications is this for?
It's written for people using semaglutide or tirzepatide medications, including compounded versions. The food and training advice works for anyone eating small portions. We don't sell, recommend or give advice about any medication, and we're not affiliated with any drug maker.
Is this medical advice?
No. It's educational food and exercise guidance based on published nutrition recommendations. It doesn't replace your prescriber or a registered dietitian. Talk to your clinician before changing your diet or exercise, especially if you have kidney disease, diabetes or another condition.
I'm vegetarian. Does it work for me?
Yes, if you eat eggs and dairy. There's a swap table for every meat and fish meal. If you're fully vegan, it's harder. The swaps cover tofu, tempeh, seitan and legumes, but you'll rely on plant protein powder more often.
What if I've already stopped, or I'm planning to?
Part 7, The 2-Year Plan, covers what to do when your appetite returns: regain warning signs, how to find your maintenance calories and how to adjust protein. Any decision about your dose or stopping belongs to you and your doctor.
How do I get it?
Checkout opens at launch; join the list to hear first. Once checkout is live, you'll get a download link after purchase. It's a 78-page PDF that reads well on a phone and prints cleanly, and the 12 tracker pages are made for printing.
Why only $19?
It's a launch price while we collect feedback. If the price goes up later, you keep everything you bought, including future updates to this edition.
The shot is doing its part. Start doing yours this week.
Your number, your first week of meals and your first training session. Version B starts with one week.
