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
Is Rowing Machine Good For Weight Loss?
Yes, rowing machines are genuinely effective for weight loss. A single 30-minute rowing session can burn 250–600 calories depending on intensity and body weight, making it one of the most efficient cardio exercises available. Rowing builds lean muscle, boosts metabolism, and supports sustainable weight loss uk when combined with a healthy diet. However, for adults struggling with significant excess weight or weight-related health conditions, combining exercise with prescription weight loss medication may offer additional support. Your GP can discuss all available options with you.
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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.
UK Prescription Weight Loss Options
If you're eligible, three UK-licensed medications can support weight management alongside exercise like rowing:
- Mounjaro (tirzepatide) — A once-weekly injection approved for adults with BMI 30+ or BMI 27+ with weight-related health conditions. Clinical trials showed average weight loss of 15–21% over 72 weeks when combined with lifestyle changes.
- Wegovy (semaglutide) — A once-weekly GLP-1 injection. Average weight loss approximately 15% of body weight in clinical trials.
- Saxenda (liraglutide) — A daily injection option, approved for similar eligibility criteria.
All three are prescription-only and require clinical assessment. They work by reducing appetite and supporting portion control — making it easier to maintain the calorie deficit that, combined with activities like rowing, drives meaningful weight loss.
Clinically BackedWeight Loss
No appointments. No waiting rooms. Just care — from a UK-regulated online pharmacy.
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.
NHS Access vs Private Options
NHS weight loss medication is available through specialist tier 3 weight management services, though waiting times and regional availability vary significantly. Your GP can refer you if you're eligible. Privately, UK-licensed prescribers offer online consultations and prescriptions following a clinical assessment — typically available within days rather than months.
Whether you choose NHS or private access, the foundation remains the same: sustainable weight loss combines regular physical activity (rowing is excellent for this), reduced-calorie nutrition, and where appropriate, prescription support. Use our free BMI calculator to check your personal BMI and discuss your options with your GP. Our GLP-1 weight loss calculator can help estimate potential outcomes if medication is appropriate for you.
- 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 many calories does a 30-minute rowing session burn?
Most adults burn 250–600 calories in 30 minutes of rowing, depending on intensity, body weight, and fitness level. This makes rowing one of the most calorie-efficient cardio exercises. For sustainable weight loss, aim for 150 minutes of moderate-intensity rowing per week alongside a healthy diet and adequate protein intake.
Can I lose weight with rowing alone, without medication?
Yes, many people achieve significant weight loss through rowing combined with dietary changes. However, if you have a BMI over 30 or weight-related health conditions like type 2 diabetes, your GP may recommend prescription support alongside exercise to improve outcomes and health markers more quickly.
Am I eligible for prescription weight loss medication in the UK?
You may be eligible if you have a BMI of 30 or above, or 27+ with at least one weight-related health condition (diabetes, high blood pressure, sleep apnoea, or cardiovascular disease). South Asian, Chinese, Black African, and Black Caribbean adults may have lower eligibility thresholds. Speak to your GP to discuss whether medication is right for you.
How long does prescription weight loss medication take to work?
Weight loss typically becomes noticeable within 2–4 weeks, with the most significant results seen between weeks 8–16. However, individual results vary. Medications work best when combined with regular exercise (like rowing), reduced calorie intake, and lifestyle changes. Your prescriber will monitor your progress regularly.
Is it safe to use rowing machines while taking weight loss medication?
Yes, regular moderate-to-vigorous exercise like rowing is encouraged alongside prescription weight loss medication. In fact, combining both approaches typically produces better health outcomes than either alone. However, if you're new to exercise or have any health concerns, consult your GP or prescriber before starting an intensive rowing programme.
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.