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What's Your Goal?

A Plan Built Around You And Your Unique Physiology

Metabolic Testing

Are you looking to lose weight and improve your exercise performance?


Box Nutrition has the perfect solution for you – metabolic testing. We use a combination of clinical tests and advanced technology to build nutrition and exercise plans tailored specifically for your unique metabolism. This means that you’ll see real results, fast.


Our metabolic testing service is the most accurate way to create a personalised nutrition and exercise plan. Plus, our plans are designed to be easy to follow, so you can see results without any fuss.

Click here to find out what test is right for you.

We understand that everybody is different, which means that your diet and training should be personal to YOU.

This can be determined by metabolic testing.

Metabolic testing is what we use to know what to eat and how to train effectively, whether you're an athlete or interested in weight loss.


And we can do it for you.

Based in Birmingham, UK, we help a range of individuals reach their performance and weight loss goals without the guesswork.


What is your Goal?

At Box, we offer two main types of metabolic testing depending on your goal.

Our Weight Loss Package - Ignite .  The Ignite Weight Loss Transformation Programme helps men and women who are struggling to lose weight, transform their bodies in 180 days, who are and frustrated by a lack of progress and overwhelmed by what diet and weight loss advice to follow, so they can transform their bodies and feel more confident again.

Our Performance Package - Box Endure is for athletes looking to improve their performance and body composition.

What we test with metabolic testing

VO2Max and lactate testing - How fit are you?

Fuel utilisation/metabolic efficiency - How effective are you at burning fat?


Energy expenditure - how many kcals do you burn at different intensities/zones


Resting Metabolic Rate (metabolism) Test - How many kcals do you burn at rest

Performance testing also includes  speed and power at your aerobic and anaerobic thresholds as well establishing your training zones.

Not sure what test is right for you?

See our full range of tests here.

Testing Data

After a metabolic testing session, you will receive a complete breakdown and debrief session running through the testing data.


This includes:

  • Training zones and thresholds


  • Kcal expenditure and speed/watts at each zone


  • Metabolic efficiency point - carb vs fat burn


  • Identification of strengths and weaknesses against normative values


  • RMR report - resting metabolic rate and predicted daily kcal requirements

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Why Test Your Metabolism With Box

  • Tested over 500 individuals

  • High-end metabolic testing equipment also used by the military and university labs

  • Discounted group bookings available​

  • Our portable analyser means we can travel to you or test on site

My name is Jack Braniff and I help athletes perform, look and feel their best. I'm the founder of Box Nutrition and a registered performance nutritionist (SENr, CISSN), have my Masters degree (MSc) in Sports and Exercise nutrition, a member of the British Dietetics Association and a UKAD anti doping advisor. I'm also the author of top rated sports nutrition book "Fuelling The Functional Athlete" which is available from Amazon.

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Book Your Test

For more information and to book your test, please click on the button below.

Once you have booked your testing, you  will be contacted beforehand  to discuss testing protocols.

Contact Us

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We are situated the between Wylde Green and Erdington in Birmingham (B24 0DE), just 10-15mins walk from Wylde Green Station. We also operate from the Club and Spa in Birmingham city centre. 


Before any testing, we have a quick 15mins consultation This is just a quick chat to get to know you, understand your goals and go through what to expect during testing.

After your consultation, your metabolic testing will be conducted. You will then receive your results within 48hrs.