The UK's most complete GLP-1 guide
Every Question Answered. Every Side Effect Explained.
- How GLP-1 medications work
- Mounjaro vs Wegovy compared
- Injection instructions
- Side effects & solutions
- What to eat on treatment
- FAQs answered
Free tracker included with every download this week
Weight Loss Exercise Regime: What Works in the UK
A weight loss exercise regime is essential for sustainable weight management in the UK. The NHS recommends combining regular physical activity with dietary changes to achieve healthy, lasting results. Exercise not only burns calories but improves cardiovascular health, strengthens muscles, and supports mental wellbeing. This guide explains evidence-based exercise approaches that work alongside nhs weight loss strategies, whether you're managing weight independently or with prescription support.
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Calculate Your BMI Instantly
Enter your height and weight below. Supports both imperial (stone & lbs) and metric (kg). Results include NHS category, healthy weight range, and ethnicity adjustments.
What Is BMI and Why Does It Matter?
Body Mass Index (BMI) is the most widely used screening tool for assessing whether your weight falls within a healthy range. Used by the NHS, GPs, and weight management services across the UK, BMI provides a quick snapshot of your weight relative to your height. The formula is simple: your weight in kilograms divided by your height in metres squared (kg/m²).
While BMI isn't a perfect measure — it doesn't account for muscle mass, bone density, or fat distribution — it remains the standard first step in identifying potential weight-related health risks including type 2 diabetes, cardiovascular disease, high blood pressure, and certain cancers.
The NHS also recommends adjusted thresholds for people of South Asian, Chinese, or Black African heritage — a BMI of 23 or above is classified as overweight, and 27.5 as obese. Our calculator includes this adjustment as a one-click toggle.
Building an Effective Exercise Routine for Weight Loss
An effective weight loss exercise regime should combine three key components. Cardiovascular exercise (150 minutes per week of moderate intensity, or 75 minutes vigorous) burns calories and strengthens your heart — examples include brisk walking, cycling, or swimming. Resistance training (2–3 sessions weekly) builds muscle mass, which increases resting metabolic rate and prevents muscle loss during weight reduction. Daily movement — standing, walking, and light activity — accounts for significant energy expenditure often overlooked in structured exercise.
- Moderate cardio: walking, jogging, dancing, gym classes
- Vigorous cardio: running, HIIT, competitive sports
- Resistance: weights, bodyweight exercises, resistance bands
- Flexibility: yoga, stretching (2 sessions per week)
The NHS emphasises that consistency matters more than intensity. A sustainable routine you maintain for months is more effective than an intense programme you abandon. Start gradually and progress over 4–6 weeks to avoid injury and burnout.
Clinically BackedWeight Loss
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How It Works
Three simple steps to understand your weight and take action.
Enter your height and weight in our free calculator. Get your BMI, NHS category, healthy weight range, and ethnicity-adjusted thresholds instantly.
If your BMI suggests you're overweight or obese, explore our GLP-1 calculators to project potential weight loss on Mounjaro or Wegovy.
Use our progress tracker to log your weight weekly, visualise your journey with charts, and stay motivated — all stored privately in your browser.
Free Weight Loss Tools & Guides
Everything you need to understand your weight, explore medication options, and track your progress — completely free.
Exercise and Weight Loss Medication: A Combined Approach
For those using prescription weight loss medication like Mounjaro or Wegovy, exercise becomes even more valuable. Glp-1 weight loss medications work by reducing appetite and supporting fullness, but they work best alongside physical activity and dietary change. Exercise helps preserve muscle mass during weight loss, improves insulin sensitivity, and enhances mood — all benefits that complement weight loss medication nhs prescribing.
Try our free GLP-1 weight loss calculator to see projected results when combining medication with exercise. Many people find that adding structured exercise helps them reach their weight loss goals faster and sustain results long-term. Your GP or prescriber can advise whether exercise adjustments are needed if you start prescription weight loss treatment.
Use our free BMI calculator to track how your weight and fitness changes affect your BMI category over time. Monitor your progress with our progress tracker, logging both weight and exercise sessions to stay motivated. Remember that muscle weighs more than fat — you may see positive health changes before the scales move significantly. Take measurements and note energy levels, strength improvements, and how clothes fit as additional success markers beyond weight alone.
- Dual GIP/GLP-1 receptor agonist
- Up to 22.5% body weight loss (SURMOUNT-1)
- Weekly injection, dose escalation over 20+ weeks
- Available via private prescription in the UK
- Doses: 2.5mg → 5mg → 7.5mg → 10mg → 12.5mg → 15mg
- GLP-1 receptor agonist
- Up to 15–17% body weight loss (STEP trials)
- Weekly injection, 5-step dose escalation
- NHS & private prescription available
- Doses: 0.25mg → 0.5mg → 1mg → 1.7mg → 2.4mg
Mounjaro vs Wegovy: Head-to-Head
A side-by-side comparison of the two most popular GLP-1 weight loss medications available in the UK.
| Feature | Mounjaro | Wegovy |
|---|---|---|
| Drug class | Dual GIP/GLP-1 agonist | GLP-1 agonist |
| Active ingredient | Tirzepatide | Semaglutide |
| Avg. weight loss | 15–22.5% | 12–17% |
| Key trial | SURMOUNT-1 (2022) | STEP 1 (2021) |
| Max dose | 15 mg weekly | 2.4 mg weekly |
| Escalation period | 20–32 weeks | 16–20 weeks |
| Administration | Weekly injection (pen) | Weekly injection (pen) |
| NHS availability | Private prescription only | NHS & private |
| Approx. private cost | £150–£250/month | £150–£300/month |
| Common side effects | Nausea, diarrhoea, constipation | Nausea, vomiting, diarrhoea |
Data sourced from SURMOUNT-1 and STEP 1 clinical trials. Costs are approximate and vary by provider. Always consult a prescriber.
Am I Eligible for Weight Loss Medication?
In the UK, eligibility for GLP-1 weight loss medications like Mounjaro and Wegovy is based on your BMI and overall health profile.
- BMI of 30 or above (obese)
- Age 18 or over
- No contraindicated conditions
- Committed to lifestyle changes
- BMI of 27 or above
- Plus type 2 diabetes
- Or high blood pressure
- Or obstructive sleep apnoea
Use our BMI calculator to check whether your BMI falls within the eligible range.
How We Built These Tools
Every calculator and guide on myweightcheck is built with accuracy and transparency in mind. Our BMI calculator uses the standard WHO formula with NHS-aligned category thresholds. Our GLP-1 projections are modelled on published clinical trial data from SURMOUNT and STEP studies.
All data stays on your device. We don't require sign-ups, and we don't store your health information on any server. Your progress tracker saves data locally in your browser using localStorage, so only you can see it.
We're based in the UK and our tools are designed specifically for UK users — supporting stone & lbs by default, referencing NHS guidelines, using NICE-approved medication data, and linking to GPhC-registered pharmacies.
Frequently Asked Questions
Common questions about BMI, weight loss medications, and our free UK tools.
How much exercise do I need to lose weight?
The NHS recommends at least 150 minutes of moderate-intensity exercise per week (such as brisk walking) or 75 minutes of vigorous activity (like running), plus resistance training twice weekly. Combined with a calorie deficit through diet, this supports sustainable weight loss of around 0.5–1 kg per week. Start with what you can manage and build gradually.
Is exercise alone enough for weight loss?
Exercise alone is less effective than combining exercise with dietary change. Weight loss primarily comes from creating a calorie deficit — you need to consume fewer calories than you burn. Exercise supports this by burning calories and preserving muscle, but diet is typically the larger factor. The most successful weight management combines both.
Can I exercise while taking Wegovy or Mounjaro?
Yes, exercise is actively encouraged alongside prescription weight loss medication. However, start gradually and stay hydrated, as GLP-1 medications can affect appetite and digestion. Inform your GP or prescriber about your exercise plans, especially if you take diabetes medication. Some people find they need to adjust meal timing around workouts when using these injections.
What's the best time to exercise for weight loss?
The best time is when you'll actually do it consistently. Morning exercise may boost metabolism throughout the day; evening activity may disturb sleep. Spread activity across the week rather than cramming it into one or two days. Consistency matters far more than timing — choose a schedule you can maintain long-term.
Do I need a gym to start a weight loss exercise regime?
No. Effective exercise includes walking, home bodyweight exercises (push-ups, squats, lunges), YouTube fitness videos, cycling, swimming, and sports. The NHS recommends finding activities you enjoy — you're far more likely to stick with exercise you find rewarding. Start with free activities and progress if you choose to join a gym later.
Ready to take control of your weight loss journey?
Start with a free BMI check, explore your GLP-1 options, or begin tracking your progress today. No sign-up. No cost. Just results.