Metabolic & RMR testing near you
Stop guessing your calories from an online formula. Our resting metabolic rate test measures exactly how many calories your body burns at rest, so your nutrition plan starts from your number, not an average.
Testing led by Jack Braniff — MSc Sport & Exercise Nutrition, SENr & CISSN registered, UKAD anti-doping advisor and author of Fuelling The Functional Athlete.
Why test
Everyone's metabolism is different. Yours is measurable.
Almost every diet, app and calorie target starts from a formula — a population average based on your age, height, weight and sex. But real metabolisms vary widely around that average. If yours runs slower or faster than the formula assumes, every plan built on that estimate is off before you begin, which is why so many carefully-followed diets simply don't work.
An RMR test replaces the estimate with a measurement. Using indirect calorimetry, we analyse the oxygen you consume and carbon dioxide you produce at rest to calculate exactly how many calories your body burns doing nothing. From there, your calorie and macronutrient targets are built on your number.
It's the foundation everything else sits on — whether your goal is fat loss, fuelling performance, or finally understanding why your weight won't budge.
RMR + InBody = accurate targets
Your resting metabolism is strongly driven by how much muscle you carry. Combining an RMR test with an InBody body composition scan lets us set calorie and macro targets against both your measured burn and your lean mass — the most accurate nutrition baseline we offer.
How it works
Your metabolic test, step by step
Consultation
A 15-minute chat about your goals, history, and anything you've tried before, so the debrief and your targets are built around you.
Rest & setup
You settle and rest quietly. When your body is calm and at rest, we begin — resting state is essential for an accurate reading.
Measure
You breathe normally while we analyse your oxygen use and carbon dioxide output. From this we calculate your resting metabolic rate in calories per day.
Set your targets
We translate your measured RMR into calorie and macronutrient targets for your specific goal, factoring in your activity levels.
Debrief & report
Jack walks you through your numbers and exactly how to eat around them. Your report is yours to keep and act on.
Who it's for
The number under every good plan
Eat for your body
If diets never seem to work, it may be because they were built on the wrong number. Start from your measured metabolism instead.
Fuel the training
Under-fuelling wrecks performance and recovery. Know your true baseline before adding training calories on top.
Understand your body
Whether for health, hormones or simply curiosity, knowing your real metabolic rate is a powerful starting point.
Common questions
What is RMR / metabolic testing?
Resting metabolic rate (RMR) testing measures how many calories your body burns at complete rest to keep you alive — breathing, circulation, brain function. We measure it directly using indirect calorimetry, analysing the oxygen you use and carbon dioxide you produce while you rest quietly.
Why not just use an online calorie calculator?
Online calculators use population averages and can be out by hundreds of calories for any individual. If your real metabolism is slower or faster than the formula assumes, every plan built on that estimate is wrong from the start. Measuring removes the guesswork.
Where is your metabolic testing based?
We're in Birmingham at Hastingwood Business Park (B24 9QR), between Wylde Green and Erdington — around 10–15 minutes' walk from Wylde Green station, with free on-site parking. We test clients from across Birmingham, Sutton Coldfield, Solihull and the wider West Midlands.
How do I prepare for an RMR test?
Come fasted (typically no food for around 4 hours, and no caffeine or exercise beforehand — we'll send exact instructions when you book), and plan to rest quietly for a few minutes before we start so your body is truly at rest.
Who is metabolic testing for?
Anyone who wants accurate calorie targets — whether the goal is fat loss, performance, or simply understanding their body. It's especially useful if you've struggled to lose weight despite eating carefully, since it reveals your true energy needs rather than an assumed one.
What do I get afterwards?
A clear breakdown of your resting calorie burn, calorie and macronutrient targets built around your goal, and a debrief with Jack. Pair it with an InBody scan and we can refine those targets against your muscle mass.
Metabolic and RMR testing in north Birmingham
Our lab sits at Hastingwood Business Park on Wood Lane, between Wylde Green and Erdington — a short walk from Wylde Green station, with free parking on site and easy reach of the M6.
We test runners, cyclists, triathletes and everyday clients from across Birmingham, Sutton Coldfield, Solihull, Tamworth, Lichfield and the wider West Midlands.
Unit C20, Hastingwood Business Park, Wood Lane
Birmingham B24 9QR
Thu 08–18 Fri 08–13 Sat 08–14 Sun —
Stop guessing.
Start measuring.
Your metabolism is not average — so stop planning around an average. Book your RMR test in Birmingham and get calorie and macro targets built on your real numbers.
Check availability & book online