Metabolic Testing

Testing for all abilities

Box Nutrition offers affordable metabolic testing and nutrition coaching for sports men and women of all abilities in Birmingham, UK.


We understand that even recreational and amateur athlete’s want to get the best out of their training and competition, however can’t always get access to physiological testing.


Box Nutrition is able to offer a complete athlete screening for key performance and health indicators.

This includes a VO2 analysis as well as a body composition assessment via a skinfold assessment to accurately determine body fat levels.

This enables us to provide you with tailored nutrition programme and informed training guidelines so you can achieve your results more quickly. 

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How can it help you?

Endurance Performance 

  • Gauge aerobic fitness levels

  • Measure training effectiveness

  • Measure training zones and thresholds

  • Assess fuel economy

Weight Loss

  • ​Detect Weight Loss Plateau

  • Provide you with the exact calories you burn at rest to help determine how much you should be eating for your goal

  • Develop training & nutrition guidelines for fat loss

  • Assess fat burning efficiency and resting metabolic rate (RMR)​​

Functional Fitness  

  • Measure fuel economy and resting metabolic rate (RMR)

  • Measure peak aerobic fitness

  • Assess aerobic and anaerobic thresholds to understand  how to pace workouts and maximise training

How it Works

Box Nutrition gives you the most comprehensive and insightful assessment allowing us to develop an accurate nutrition and plan and recommendations for your training.

1. Test

Perform an RMR or VO2 test

2. Analyze

Using state of the art software, we analyse your data

3. Plan

Based on your results, we provide you with a full analysis and debrief session to understand the key takeaways from your  test.

What We Offer

The Tests.


Our body composition assessment uses a skinfold assessment to accurately determine body fat levels.

1. 7 Site Skinfold Body Composition Analysis

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The Resting Metabolic Rate (RMR)  test determines how many calories your body burns at rest, which will help you us provide you with an accurate assessment of how much you need to eat based on your goals.

2. RMR Test


The fat max test is an exercise protocol that measures the use of carbohydrate and fat for energy,  which can help determine which intensity of exercise is best suited for increased total fat oxidation (burning). This can be useful for endurance athletes training for long distance events (70.4, ironman and ultra) and individuals interested in body composition.



3. Fat Max Test


A VO2 max is a test of aerobic capacity. Having a high VO2 max is a prerequisite for any successful endurance athlete. The VO2 max test enables us to accurately gauge your aerobic (fitness) levels,  pinpoint heart rate zones and thresholds, and monitor the effectiveness of your training.

4. VO2 Max Test


Choose from either the baseline fitness blood (£70) test or advanced fitness blood test (extra  £150).

This test offers an advanced understanding of key biomarkers which can affect your fitness goals, whether in the gym or on the sports field. With insights into muscle mass (testosterone), anaemia and low energy (iron status and vitamin B12), as well as stress and over-training (cortisol), it also includes tests for important nutritional markers which, if low, can affect your training progress.

5. Bloodwork


After your testing you will receive a debrief session to properly understand your data, so you are able to implement our recommendations into your training and nutrition plan.

6. Debrief Session and anlaysis


Based on your results and goals, we will provide you with a supplement strategy personalised to you.

7. Supplement strategy

Book  Now.


  • Consultation and diet history questionnaire

  • RMR Test

  • Analysis report and debrief session

RMR Test

What's included?


  • Consultation and diet history questionnaire

  • VO2 Max and Fat Max test

  • Thresholds (Aerobic and Anaerobic ) and personalised training zones provided

  • Analysis report and debrief session

VO2 Max Test

What's included?


  • Consultation and diet history questionnaire

  • RMR Test

  • VO2 Max and Fat Max test

  • Thresholds (Aerobic and Anaerobic ) and personalised training zones provided

  • Analysis report and debrief session

RMR + VO2 Max Test

What's included?


  • Consultation and diet history questionnaire

  • 7 Site Skin Fold Body composition analysis

  • Blood pressure check

  • RMR Test - how many kcals you require at rest and full macro breakdown

  • VO2 Max and Fat Max tests to establish training zones and cardiovascular fitness

  • Thresholds (Aerobic and Anaerobic ) and personalised training zones provided

  • Analysis report and debrief session

  • Kcal and macro portion guide

  • 2 weeks nutrition support

  • Optional bloodwork (£99)

Athlete Testing

What's included?


Find us.

Friendly settings.

We are situated within the custard factory Birmingham, just 10-15mins walk from Moor Street  Station.

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.


Your Results

After your test, we analyse your data and provide you with your full results analysis and nutrition breakdown.​


An RMR analysis includes a kcal and macronutrient breakdown of exactly how much and what you should be eating, which will be tailored to your goals, training and schedule.


As part of the VO2 test you will also receive a breakdown of your cardiovascular fitness score, mechanical efficiency, muscle fibre breakdown, fat burning efficiency and breathing efficiency analysis.

Book Your Test

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

Studio 511 Greenhouse, Gibb Street, Birmingham, B9 4DJ


Office: (+44)121 389 8923

M: (+44)7860945336

TUES-FRI 07:00 – 20:00, SAT 08:00 – 14:00

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

Contact Us
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Jack Braniff MSc


My name is Jack Braniff, founder of Box Nutrition. I’m a registered sports nutritionist (SENr) by trade and hold my Masters degree (MSc) in Sports and Exercise nutrition.

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