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Metabolic Rate Testing

Take the guesswork out of nutrition with Resting Metabolic Rate (RMR) testing. Whether your goal is weight loss, performance, or better health, this simple, non-invasive test reveals exactly how many calories your body burns at rest — providing the most accurate foundation for your nutrition and training plan.

Your personalised report includes:

  • Resting Metabolic Rate (RMR)
  • Daily energy needs based on lifestyle, activity & exercise
  • Maintenance, weight loss & weight gain calorie zones
  • Metabolic speed compared to your age, gender, height & weight
  • Body weight
  • Body fat %
  • Muscle mass

After your test, we’ll sit down for a one-to-one consultation to explain what the results mean in clear, practical terms — so you’ll know exactly how to fuel your body for your goals.

Enduraprep | Triathlon, Cycling & Running Coaching
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Lewis W. profile pictureLewis W.
22:06 30 Sep 25
I can't thank Coach Cronk enough!
After signing up for Ironman Wales, I quickly realised I had no idea how to train for such an event. A quick call with Lawrence helped ease my nerves (especially concerning the bike section) as he designed an easy-to-follow training plan.
Lawrence went above and beyond, providing weekly updates and offering little tips and tricks to help with future training sessions.
After just four months with Lawrence, I conquered the dragon and became an Ironman.
Christopher Y. profile pictureChristopher Y.
11:37 26 Sep 25
After not completing Ironman wales last year, I got in touch with Lawrence to go all in to complete it this year! He helped me achieve my goal, brought my fitness to a level that I’ve never had before! His guidance and knowledge helped me every step of the way, pushed me when needed and encouraged when I was in a low spot. Amazing experience!
Rhys H. profile pictureRhys H.
20:28 24 Sep 25
I had Lawrence from Enduraprep coach me for Ironman Wales. I couldn’t recommend him enough. Lawrence updated my training plan regularly and would amend it quickly when needed to. The training program was excellent and helped me reach my goal of being an Ironman. Lawrence was always reachable whether it be through phone, WhatsApp or email and would always be extremely helpful. He tailored the plan to my needs (bike/work schedule) which I really appreciated. I would recommend Lawrence to anyone looking to reach their goal and I will defiantly use Lawrence for my next big event.
pippa W. profile picturepippa W.
16:43 24 Sep 25
I recently completed Ironman Wales and couldn’t thank Coach Cronk enough for all his support and coaching to just get me to the start line!
I entered this race with no triathlon experience and not really any clue what I was doing but after a year of coaching I have managed to do 2 other triathlons and actually get down the finish line of an Ironman🏴󠁧󠁢󠁷󠁬󠁳󠁿

Cronk really took into consideration my currently capabilities and designed the training to fit me and my schedule. The monthly videos and assistance really helped to ease my worries and answer any ridiculous questions I have had for each triathlon I’ve done now (especially Ironman😅)

Thankyou so much for all your help. I can’t wait to do another one now!!
Photo from customer review
james H. profile picturejames H.
12:23 03 Aug 25
I have trained with Lawrence from Enduraprep for a few years now. He has helped me in taking over 45 minutes off my marathon PB, hours off my ironman PB, and numerous other personal best results across other race distances.

His advice and plans are always insightful, precise and tailored towards whatever event I am building up to. He is also very good at adjusting my plan to fit around my bust work schedule, and adjusting sessions with short notice if something changes in my week.

Highly recommend.
Ema P. profile pictureEma P.
09:26 27 Mar 25
Had rmr testing with Craig.
He was really nice, very welcoming, chatty and made me feel at ease straight away, super informative with all the information he gave me.
will definitely be going back in a few months , really happy with the service!

Also on the actual testing place is on beautiful grounds, so just a added bonus!

Thank you, Craig!
Alun G. profile pictureAlun G.
08:13 23 Jan 25
Top guy, Top service

Very knowledgeable
Rachel G. profile pictureRachel G.
14:55 05 Dec 24
Had a resting metabolic test with Craig and it was a great experience. Craig was very welcoming, made me feel quickly at ease and clearly explained the process. The results are really informative and helpful when thinking about how I manage my calorie intake. Having the information so clearly explained is actually really liberating when planning how to manage life and food intake for both weight loss and maintenance. Thank you Craig.
Chris T. profile pictureChris T.
10:18 25 Sep 24
Had a VO2 max test with Craig. Very good, lots of useful information and advice which I'll use to modify my training for mountaineering. Will get a re-test in six months.
Esmae E. profile pictureEsmae E.
19:09 25 Feb 24
Had a resting metabolic rate test with Craig and was a great experience! Craig is a lovely guy and explained the details of how everything would go. The test itself is very handy and is good to know if you want to be exact with how many calories your body needs daily. Willl be booking in again after finishing my diet!

Thankyou again

Lloyd
William M. profile pictureWilliam M.
07:21 19 Oct 23
Lawrence is an absolutely fantastic coach. Extremely knowledgeable, he designs and regularly reviews my training plan based on performance/plans/fatigue etc. Lawrence checks in regularly to see how training is going and provide feedback and my fitness (and race times!) have come on MASSIVELY since he started coaching me a year ago. Highly recommend.
Tom W. profile pictureTom W.
21:10 25 Sep 23
I worked with Lawrence at Enduraprep this year with the aim of completing Ironman Wales 2023. All the workouts are easy to access and understand on training peaks and email; weekly communication with Lawrence via video was really helpful in analysing the weeks training and talking through the plans for the upcoming weeks. The workouts, although obviously challenging, were pitched at the right level for my fitness and achievable. I was able to complete Ironman Wales in my target time and finished the run strongly which is definitely due to the training programme Lawrence had created for me. I would definitely recommend Lawrence at Enduraprep and I’ll be when I’ve chosen my next race!
Desert F. profile pictureDesert F.
12:39 25 Sep 23
I have been with Endrarep for almost 2 years. They have helped me constantly with my entry into Triathlons. Not only do they have progressive individualised training programmes, they also take the time out to check in and see how the training is going and then review and amend the programme as necessary. I have also helped at length pick suitable bike for my requirements at great length.

Highly recommend
Chris J. profile pictureChris J.
21:29 20 Sep 23
Lawrence has been very open and responsive to my need for information. Always willing to adjust plans around my personal circumstances. Looking forward to a successful 2024 with his guidance.
999GaryG profile picture999GaryG
09:04 19 Sep 23
I've been using Lawrence for the past 2 years and have found him to be very knowledgeable, supportive whilst also demanding. As an ageing triathlete competing at full and middle distance, I have found the training plan achievable and personal without needless junk miles thrown in but also having sufficient zone 4+ workouts to facilitate adaptations. During this time I have podiumed 4 times with two firsts, one runner up and one third.
Mayukhmoy M. profile pictureMayukhmoy M.
11:42 11 Sep 23
Lawrence is an excellent coach and helped me to get back to regular training.
Very easy to approach and always happy to help.
Definitely recommend him and Enduraprep.
David H. profile pictureDavid H.
08:49 11 Sep 23
Lawrence has coached me for 6 years and counting, from triathlon rookie to Ironman veteran. He has learnt how to get the best out of me as an individual and will build challenging but realistic training plans to help me achieve my goals. His methods are plans are continually evolving and I'm loving the new video check ins!
Rachel M. profile pictureRachel M.
15:45 09 Sep 23
Lawrence has been a great coach over the past year or so as I have trained for Ironman Wales via a marathon pb too. He has planned training around life events (my wedding, MSc modules, etc!) and helped me build back up from breaks in training. The weekly video check ins are really useful as you see your own training as a coach would. This means there is context to the comments and feedback. I would recommend Lawrence for triathlon / endurance training.
Stephen A. profile pictureStephen A.
17:20 08 Sep 23
Lawrence helped me achieve my goal of completing Ironman Wales having only completed a 70.3 and a few half marathons a long time ago. I had been using a generic training plan until around 2 months out from race day when I contacted Lawrence with an SOS message needing something a bit more tailored as I had plantar fasciitis and was also struggling with the bike. He was able to devise a plan that catered to my individual needs and was flexible around my changing work commitments. I have no doubt that without Lawrence I would have DNF’d. Instead he got me in shape and around a really challenging course.
Photo from customer review
Emma W. profile pictureEmma W.
07:24 07 Sep 23
Lawrence has been my coach for the last two years. During that time I have completed two marathons and two Ironman events, along with numerous shorter runs and triathlons. Lawrence has helped me to achieve PBs at each event, and get me onto the podium and into the world championships at my last Ironman. Even with a variable shift pattern, holidays and social commitments, Lawrence has provided a robust and flexible training schedule. He is always available for a last minute change to the programme when I have needed it.

How long does it take and what does it cost?

Each appointment lasts around 45–60 minutes (setup, test, review). Choose the option that best fits your goals:

  • Resting Metabolic Rate (RMR): £65
  • VO₂ Max Bike Test: £90
  • VO₂ Max Run Test: £90
  • 1 VO₂ Max Test + 1 RMR Test: £120
  • VO₂ Max Bike + VO₂ Max Run + RMR Test: £170

Contact Us

We’ll respond as soon as we can.

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What to Expect During Your RMR Test

1) Arrive & settle
We’ll greet you, run through the prep checklist, and make sure you’re comfortable. You’ll sit or recline in a calm, temperature-controlled room.
Tip: Wear comfy clothing and arrive a few minutes early so you can fully relax.
2) Brief explanation
Your coach will explain how the test works and what we’re measuring (your resting energy use). You can ask questions at any time.
3) Resting setup
You’ll rest quietly while breathing normally through a hood or mouthpiece connected to the analyser. No effort is required — just breathe and relax.
4) Measurement (about 15–20 minutes)
We record your oxygen consumption to calculate your Resting Metabolic Rate. Staying still and relaxed helps ensure accurate results.
5) Instant results & mini consult
We’ll review your RMR, estimated daily energy needs (lifestyle + activity), and personalised ranges for maintenance, weight loss, or weight gain. You’ll leave knowing how to set your calories with confidence.
6) Follow-up options
If you’d like, we can schedule a deeper review, update your training plan, or suggest next steps (e.g. nutrition strategies or retesting later to track change).

RMR / Metabolic Testing – Frequently Asked Questions

What is RMR testing and what does it measure?
RMR testing (Resting Metabolic Rate) measures how many calories your body burns at rest using indirect calorimetry (VO₂ & VCO₂ data). This gives insight into your baseline energy needs and helps tailor your calorie targets.
Who benefits from RMR testing?
Athletes refining nutrition, individuals managing weight, or anyone wanting data-informed calorie guidelines. Ideal if you’ve hit a performance or weight plateau and need precise fueling.
How is the test conducted?
You relax quietly (seated or lying) while breathing through a hood or mouthpiece for 15–25 minutes. The machine records gas exchange to compute your RMR. No effort or exercise involved.
How should I prepare?
• Fast for 4–6 hours beforehand (water only).
• Avoid caffeine, nicotine, and alcohol for several hours prior.
• Do not exercise the same day (or earlier that day).
• Arrive rested, hydrated, and comfortable.
What results will I receive?
You’ll get your RMR in kcal/day, an estimate of Total Daily Energy Expenditure (TDEE) based on activity level, and actionable recommendations for maintenance, fat loss, or performance fueling.
How accurate is RMR testing vs equations or wearables?
Indirect calorimetry is the gold standard. Prediction equations (like Harris-Benedict) and wearable estimations may deviate by hundreds of calories. Testing gives a true validated baseline.
Can this help with weight loss or muscle gain?
Definitely. Using your exact RMR lets you plan sensible calorie deficits or surpluses and align macronutrient targets to support fat loss, lean mass gain or performance maintenance.
Are there reasons not to test today?
If you are unwell, slept poorly, consumed caffeine/alcohol recently, or did intense exercise, results can be skewed. You should postpone for best accuracy.
How long does it take and what’s the cost?
Plan for about 30–40 minutes for setup, the test, and result explanation. Pricing for tests:
  • Resting Metabolic Rate (RMR): £65
  • VO₂ Max Bike Test: £90
  • VO₂ Max Run Test: £90
  • 1 VO₂ Max Test + 1 RMR Test: £120
  • VO₂ Max Bike + VO₂ Max Run + RMR Test: £170
How often should I re-test?
Re-testing every 12–16 weeks, or when your body composition, training load or goals shift noticeably, helps keep your calorie targets aligned.