Should you take Mounjaro for Weight Loss?

by Dan Johnston | Sep 23, 2025 | Weight Loss

It’s easy to see the appeal. When diets feel like they’ve failed and exercise seems daunting, a simple injection promising weight loss can feel like the answer you’ve been waiting for. But like any quick fix, it comes with both pros and cons – and it’s really important to understand these before making a decision.

In this article, we’ll explore what happens when you stop taking Mounjaro, what you might miss out on compared to building healthy habits, who the medication is truly suitable for, and why lifestyle changes like nutrition, exercise, and outdoor activity can offer benefits far beyond what an injection can provide.

What Happens When You Come Off Mounjaro?

Mounjaro works by mimicking hormones in your body that regulate appetite and blood sugar, helping you feel fuller for longer and reducing cravings . This means it can be incredibly effective while you’re on it – but studies show that once people stop taking it, the weight often returns if no sustainable lifestyle changes are in place.

Think of it like a crutch: it supports you while you’re using it, but if you haven’t strengthened your own foundation (healthy eating, movement, mindset), the moment it’s removed, you’re back to where you started. For many people, this cycle can be frustrating and even disheartening.

What Do You Miss Out On by Taking Mounjaro Instead of Exercising and Improving Nutrition?

While medication may help with the number on the scale, it doesn’t give you the other amazing benefits of movement and good nutrition. Here’s what you miss out on if you only rely on Mounjaro:

• Better mental health: Exercise boosts mood, reduces stress, and can significantly lower symptoms of anxiety and depression. An injection won’t give you that.

• Stronger, healthier body: Resistance training builds muscle and strengthens bones, which reduces the risk of falls, injuries, and long-term conditions like osteoporosis.

• Improved cardiovascular health: Cardio exercise strengthens your heart and lungs, lowering your risk of high blood pressure and heart disease.

• A sense of achievement: Reaching fitness milestones – whether that’s lifting a heavier weight, walking further, or feeling fitter – is empowering in ways medication simply cannot replicate.

• Moving more and meeting new people: Exercise is often enjoyed outdoors in the sun and fresh air, as well as often enjoyed socially in groups where you can spend time with friends and even meet new people. Would an injection encourage you to move less and stay in doors?

Losing weight through exercise and better nutrition isn’t just about aesthetics; it transforms how you feel, how you move, and how you live your life.

Who Is Mounjaro Really Suitable For?

Mounjaro is not designed for anyone who just wants to lose “a bit of belly fat.” It’s a medical treatment, and it should only be considered if your doctor has specifically recommended it because your weight is putting your health at serious risk – for example, if you’re obese and at risk of developing type 2 diabetes, cardiovascular disease, or other obesity-related illnesses.

If your reasons for weight loss are more about improving confidence, energy levels, or wellbeing, then turning to medication is not the healthiest or most sustainable choice. In those cases, lifestyle changes are far safer, more rewarding, and more effective in the long term.

Why You Should Consider Healthy Habits Instead

If your motivation is feeling healthier, having more energy, looking better, or simply being able to do more in your day-to-day life, then building healthy habits will always serve you better than an injection.

• Walking outdoors can boost vitamin D, improve mood, and help regulate sleep cycles .

• Resistance training not only helps with weight loss but also improves posture, reduces various joint pains and can help improve back pain, and makes daily activities easier.

• Balanced nutrition fuels your body properly, giving you energy and resilience while also supporting your immune system.

Medication may lower the number on the scale, but lifestyle changes transform your quality of life.

How a Personal Trainer Can Help

Starting your journey towards healthier habits can feel overwhelming – and that’s where having a Personal Trainer can make all the difference.

Here at St Albans Personal Training (StAPT), we don’t believe exercise should feel like punishment or a luxury. Our job is to guide, support, and motivate you every step of the way. With us, you’ll get:

• A personalised training programme built around your lifestyle and goals.

• 1-to-1 support and accountability, so you’re never left wondering what to do next.

• Education around nutrition and movement, so you’re building habits for life – not just until the next quick fix wears off.

• A safe, supportive, and non-judgemental space to train – whether at our private studio in St Albans town centre, or at Body Limit Gym in Sandridge.

Most importantly, you’ll discover that exercise can be fun, rewarding, and something you actually look forward to. And unlike a medication, these habits will stay with you long after you’ve reached your goals.

Final Thoughts

Mounjaro might have its place for people at serious medical risk, but for most people, the healthier, more sustainable path is to embrace movement, nutrition, and lifestyle change. Not only will you lose weight, but you’ll also build strength, resilience, confidence, and joy along the way.

If you’re ready to take that first step towards a healthier, happier version of yourself – regardless as to whether you’re taking a weight loss medication or not – we’d love to help. If you are taking mounjaro or ozempic or any weight loss drug, and you would like to improve your strength, then we’re more than happy to help and would love to have you join us! We’ll never judge you and always ensure you have a fun and safe place to undertook your new fitness journey.

👉 Book a free trial session with St Albans Personal Training today and let’s start building the habits that will transform your health for life.

References

1. American Diabetes Association (2023). Standards of Care in Diabetes—2023. Section 8: Obesity and Weight Management for the Prevention and Treatment of Type 2 Diabetes. Diabetes Care 46(Suppl. 1). https://pubmed.ncbi.nlm.nih.gov/36507637/
2. Jastreboff, A.M. et al. (2022). Tirzepatide Once Weekly for the Treatment of Obesity (SURMOUNT-1). New England Journal of Medicine. https://www.nejm.org/doi/full/10.1056/NEJMoa2206038
3. Harvard Health Publishing (2020). Exercising to relax: Exercise is an all-natural treatment to fight stress. https://www.health.harvard.edu/staying-healthy/exercising-to-relax
4. American College of Sports Medicine (2009). Progression Models in Resistance Training for Healthy Adults. Medicine & Science in Sports & Exercise, 41(3): 687–708. https://pubmed.ncbi.nlm.nih.gov/19204579/
5. American College of Sports Medicine (2023). Resistance Exercise for Health – Infographic. https://acsm.org/resistance-exercise-health-infographic/
6. NHS (2023a). Benefits of Exercise. https://www.nhs.uk/live-well/exercise/exercise-health-benefits/
7. NICE (2023). Obesity: Identification, Assessment and Management (CG189, last updated July 2023). https://www.nice.org.uk/guidance/ng246
8. NHS (2022). Vitamin D – Vitamins and Minerals. https://www.nhs.uk/conditions/vitamins-and-minerals/vitamin-d/
9. British Nutrition Foundation (2023). Nutrition Information Hub. https://www.nutrition.org.uk/nutritional-information/

How to Lose Belly Fat Fast — Without Cardio (What Actually Works)

by Dan Johnston | Sep 17, 2025 | Weight Loss

Let’s Clear Something Up First

I know what you’re thinking: “But you can’t spot reduce belly fat!”
And you’re absolutely right. You can’t choose exactly where your body loses fat. But let’s break down why it can sometimes feel like you’re losing fat specifically around your stomach.

• Around 80–90% of body fat is stored just under the skin (subcutaneous fat).
• The rest (10–20%) is stored deeper around your organs (visceral fat).
• Where we hold more fat depends on things like stress, alcohol intake, poor sleep, genetics, hormones, and lifestyle.

Unfortunately, we can’t control where fat comes off. But when people lose weight, it often looks like belly fat is going first. Why? Two main reasons:

1. The midsection is large. Because it’s a big area, changes are more noticeable than in smaller areas like your arms.
2. Your mid section holds both visceral and subcutaneous fat. More capacity means more to lose — so reductions often show up there sooner.

So no, you can’t spot reduce fat. But yes, it can look and feel like belly fat is going before anywhere else. And honestly, if that motivates you, that’s a win.

About the “No Cardio” Part

When you say no cardio, I’m assuming you mean no long runs or endless time on cardio machines (I’m with you — boring!). But here’s a quick side note: walking just 30–45 minutes per day is one of the most underrated fat-loss tools. If you hate walking, don’t worry — this post is about losing belly fat without cardio workouts.

What Won’t Work (And What to Stop Believing)

Most people reach for ab workouts when they want to slim their waist. Unfortunately, research shows core exercises alone don’t burn belly fat:

• One trial had people train abs 5 days/week for 6 weeks → no reduction in abdominal fat, only better endurance.
• A newer 2023 trial showed slight extra trunk fat loss, but only with 84-minute sessions that also included treadmill work. Not practical, and definitely not “no cardio.”

Ab training is great for posture (good posture can also give the appearance of a smaller mid section btw!), stability, and core strength. But it won’t shrink your belly by itself.

What Actually Works Without Cardio

1. Create a Small, Consistent Calorie Deficit

A calorie deficit is one of the best ways to lose fat fast. If you’re burning more energy than you’re consuming, you’ll lose weight. If you’re going to go down the calorie deficit route, then do so in a sustainable way that won’t leave you feeling super fatigued or under nourished. You need to stick to a calorie intake that is sustainable for you, and that which you be consistent with.

• Safe, sustainable weight loss = about 1 lb (0.45 kg) per week.
• That’s roughly a 500 calorie daily deficit (≈3,500 calories/week).

If you stick with that, your weight loss can look like this:

• 1 month = 4lbs or 1.8kg
• 3 months = 13lbs or 5.9kg
• 6 months = 26lbs or 11.8kg
• 9 months = 39lbs or 17.7kg
• 1 year = 52lbs or 23.6kg

That’s what can be achieved if you’re simply eating in a calorie deficit of -500cals of your maintenance weight. By eating 500calories less per day, you’ll eat 3500 calories less per week and that’s how many calories are in 1lb of body fat. Time flies and the weight loss soon adds up!

So what are the calories you need to aim for? Don’t get your calculators out yet. I have a handy tool on this website which will give you your numbers. Go to my Calorie Calculator page here

👉 Calorie Calculator

and fill in the very few details required. Then you’ll have your daily calorie target according to your activity levels and the goal you set. Compare your maintenance calories to your target calories. You’ll see that if you want to lose about 1lb per week in weight, you’ll need to eat around 500cals less per day than required for your maintenance weight.

Pro tip: You can split the deficit:

• Eat ~500 calories less per day or
• Eat ~250 fewer calories + burn ~250 calories with strength training.

You can increase these results by trying to lose 2lb’s per week, but this will require you eating 1000 calories less per day. For some, this will be do able. For other’s, it may leave you feeling fatigued. You can instead do a mix of eating 500 less calories per day, and burning the other 500 calories through strength training (weight lifting). This will feel better than eating 1000 calories less per day.

2. Lift Weights 3–4 Days Per Week

Resistance training alone reduces both subcutaneous and visceral belly fat. No treadmill required.

Here is a sample of a weekly strength training split routine (45–60 minutes each):

• Day A: Squat, Bench/Push-ups, Row, Romanian Deadlift, Farmer’s Carry, Plank variation
• Day B: Deadlift/Hip Thrust, Overhead Press, Pull-ups/Lat Pulldown, Split Squat, Pallof Press, Dead Bug
• Day C: Front Squat, Incline Dumbbell Press, Seated Row, Good Morning, Hip Abduction, Side Plank

For each exercise, do the following:

• 3–4 sets of 6–12 reps.
• Use a weight that leaves 1–2 reps “in the tank.”
• Progressively increase the weight you’re lifting when you hit the top of the rep range (12).

3. Prioritise Protein

Protein keeps you fuller for longer, and helps maintain muscle mass whilst in a calorie deficit. It’ll also help you recover between workouts. Also, no you won’t get super bulky like Arnold (you’d need to lift some very very heavy weights, and eat an awful lot more food too!)

• Aim for 1.5–2.0grams per kg of body weight per day (~0.7–0.9 g per lb).
• Spread this across 3–4 meals.

4. Add Soluble Fibre

Fibre is needed for gut health, and also helps you digest the extra protein you’ll be eating. Eating more soluble fibre (fibre from vegetables, nuts, seeds, oats, legumes, fruits, and psyllium) has also been shown in several studies to help reduce visceral fat. It does this by increasing feelings of fullness and by slowing down you digestion, which in turn helps you reduce your cravings more more calories.

Aim for 25–38 g fibre per day

Insoluble fibre is good too! The difference between soluble and insoluble fibre is:

Soluble Fibre – dissolves in water to form a gel, which slows digestion, and helps regulate blood sugar and cholesterol, and promotes satiety.

Insoluble Fibre – does not dissolve in water but adds bulk to stools and stimulates bowel movements, helping to relieve constipation and keep the digestive system regular

The best sources of fibre are plant-based foods, including wholegrains (like oats, wholemeal bread, and brown rice), legumes (such as beans, lentils, and peas), vegetables (like broccoli, carrots, and sweet potatoes), fruits (including apples, pears, and berries), and nuts and seeds (such as chia seeds, almonds, and sunflower seeds).

Here’s a great article by the British Nutrition Foundation on fibre and how you can get more into your diet: https://www.nutrition.org.uk/nutritional-information/fibre

5. Keep Moving (Without “Cardio Workouts”)

This isn’t treadmill time — it’s about NEAT (Non-Exercise Activity Thermogenesis). NEAT are all the activities we do which aren’t planned exercises, so being more active with things like:

• Walking around the house, to and from work or shops instead of driving
• Cleaning, chores, gardening
• Standing instead of sitting
• Take the stairs instead of escalators or lifts

NEAT can burn hundreds of extra calories daily. All the extra calories burned throughout your week soon add up!

6. Protect Your Sleep

Aim for 7–9 hours. Poor sleep disrupts appetite hormones and makes calorie control harder. Poor sleep also disrupts muscle recovery between workouts.

7. Keep Alcohol in Check – Drink more Water Instead!

Heavy drinking, especially binges, is strongly linked to belly fat. Moderate intake is fine, but keep it sensible if your goal is a smaller waist.

You’re better off increasing your water in take. Not only will your hydration improve, but increased water intake has been shown to improve satiety as when we’re often thirst we can confuse this with being hungry as we get much of our water from our food. Try drinking a glass of water or 2 next time you think you’re hungry (especially if you had only eaten recently) and see if this helps reduce your cravings for more food.

A 4-Week “No-Cardio” Belly-Fat Blueprint

Try out this 4 week “No Cardio” sample training plan. It’s simple and easy to follow. If you don’t know how to do the exercises then ask your gym’s PT’s for help, or contact us as we offer online training via our app to help you learn how to perform strength training exercises properly, all for a low monthly cost.

Remember, this is a sample blueprint. Adjust calories, weights, and exercises to your own ability and schedule. Always check with your GP before starting if you’ve been inactive or have health concerns.

Overview

• Strength training: 3 sessions per week (45–60 minutes each).

• NEAT (daily movement): aim for 7,000–10,000 steps/day (walking, chores, light activity — not “cardio workouts”).

• Calories: eat ~500 kcal below your maintenance (use Calorie Calculator).

• Protein: 1.6 g/kg bodyweight per day.

• Fibre: 25–38 g/day (include oats, beans, fruit, veg).

• Sleep: 7–9 hours per night.

• Alcohol: ≤1 drink/day, avoid binges.

Training Plan

Format: 3 days/week (e.g. Mon–Wed–Fri).
Loading: 3–4 sets of 6–12 reps, with 1–2 reps “in the tank.”
Progression: Add weight when you can hit the top of the rep range with good form.

Day A:

• Squat (goblet or back squat)

• Bench press or push-ups

• Barbell or dumbbell row

• Romanian deadlift

• Farmer’s carry (walk with weights)

• Marching plank

Day B:

• Deadlift or hip thrust

• Overhead press (dumbbell/barbell)

• Pull-ups or lat pulldown

• Bulgarian split squat

• Pallof press

• Dead bug

Day C:

• Front squat or leg press

• Incline dumbbell press

• Seated cable row or machine row

• Good morning (hip hinge)

• Side-lying hip abduction

• Side plank

Nutrition Plan

Here’s a sample daily framework — not a rigid meal plan.

Daily Targets:

• Calories: ~500 kcal below maintenance

• Protein: 1.6–2.0 g/kg bodyweight

• Fibre: 25–38 g/day

• Carbs/fats: adjust to preference after hitting protein

Sample Day:

Breakfast

• Greek yoghurt + oats + chia seeds + berries

• Black coffee or tea

Lunch

• Chicken breast or tofu wrap with wholegrain tortilla, mixed veg, hummus

• Side of fruit

Snack

• Protein shake or boiled eggs

• Handful of nuts

Dinner

• Grilled salmon or lean beef

• Quinoa or brown rice

• Steamed broccoli and carrots

• Olive oil drizzle

Evening (if hungry)

• Cottage cheese + sliced apple

• Herbal tea

Weekly Adjustments

• Weeks 1–2: Build the habit. Keep calories ~–300 to –500/day below maintenance. Stick to the 3 strength workouts. Focus on sleep routine.

• Weeks 3–4: Progress weights by 2.5–5 kg when reps feel easy. If your average weight hasn’t dropped in 2 weeks, reduce calories by another ~100/day or add a 10–15 min post-meal walk (not “cardio,” just light activity).

Measuring Progress

• Weigh 3–4 mornings/week, average them.

• Waist measurement once per week (same spot, just above hips).

• Strength log: record weights and reps to track muscle progress.

Tracking Progress the Right Way

• Waist circumference: Using a body tape measure. measure above the hip bones, after a normal exhale. Average 2–3 readings.

• Weekly averages: Weigh yourself 3–4 times/week and average them.
  Btw, I’m not a fan of asking people to weight themselves regularly, but this is a 4 week plan and if you want to see what can be achieved in a short period of time, then we do need to track numbers and averages as this will give you the most accurate results. Personally and especially for longer programmes, I just think it’s better to see how you feel fitting into your clothes and whether they feel a bit loser or not, and avoid the weight scale entirely.

• Strength log: Track weight lifted/reps — progress here = progress in body composition.

Bottom Line

You don’t need endless cardio to lose belly fat. The proven path is simple:

• Modest calorie deficit

• Strength training 3–4× per week

• Plenty of protein and fibre

• Daily movement, good sleep, less alcohol

When you see results happening internally (i.e. improvements in your strength, feeling fitter walking up hills etc…) you know you’re on the right track, and it won’t be long before those internal improvements become external results!

References

1. CDC: Healthy Weight Loss https://www.cdc.gov/healthy-weight-growth/losing-weight/index.html
2. Vispute SS et al., 2011 https://pubmed.ncbi.nlm.nih.gov/21804427/
3. Keating SE et al., 2017 (Resistance + adiposity) https://pubmed.ncbi.nlm.nih.gov/27480242/
4. Morton RW et al., 2018 https://pubmed.ncbi.nlm.nih.gov/28698222/
5. Hairston KG et al., IRAS family study https://pubmed.ncbi.nlm.nih.gov/21681224/; Press release: https://newsroom.wakehealth.edu/news-releases/2011/06/soluble-fiber-strikes-a-blow-to-belly-fat
6. Levine JA, 2002 NEAT review https://doi.org/10.1053/beem.2002.0227; https://pubmed.ncbi.nlm.nih.gov/15102614/
7. WHO Expert Consultation 2008 https://www.who.int/publications/i/item/9789241501491