Get faster, smash your PBs.
Permanently improve your training.
Whether you ride, run, swim or Hyrox. Make sure every session counts. Get the same testing data elite athletes use...without leaving your gym.
Questions? We’re here to help.
Ask us about testing, training or bookings. If a test won’t help, we’ll tell you.
Real results from real people.
Tom
Training for a half marathon
“I thought I was training hard enough but going nowhere. The test showed me I was spending almost all my time in the wrong zones. I got faster within weeks of proper training. Thanks”
Lauren Stockley
Charlie Searle
Hyrox Elite 15 athletes
Lauren and Charlie race at the top level of Hyrox! As regular clients, our tests help them precisely understand their bodies but also to learn more about each other. They gain insights regarding where to focus their training for both solo and double races and how to work together on the course!
Mark
Endurance Cyclist
“Very clear and very well explained. I now know exactly how to improve”
Harleen
Fitness Enthusiast
“I nearly didn't book because I thought this was only for elite athletes. The earlobe prick was nothing and I got my report in two days. Now I run three times a week instead of four but I'm improving faster!”
Phil
Elite 15 coach
“Data is really important...without it you are basically just guessing. I'm really up for putting myself and my clients through these tests to get the most out of training!”
Jordan
Hyrox athlete
“I took the test because I was never sure about my Hyrox running pace. I either went out too fast or had too much left in the tank. The results showed me exactly where my thresholds sat and gave me a precise pace to target.”
Dave Tonge
Founder of Heathwood Triathlon, Multiple Ironman Finisher
“I have Ironman Wales in a months time and the London Marathon next year. I now know exactly where my body is at for this Ironman and know what I need to work on for the marathon!”
Marc
Endurance Athlete
“The data will really help my run coach and I in preparing for a Backyard Ultra”
Richard
Owner of Team Rees Group
“The service is doctor-led, so you feel confident and reassured that the results are accurate and professionally delivered.”
Matt
Hyrox Elite Athlete and UFIT Coach
“I needed to get this test but had a negative experience elsewhere. This was so professionally done and they made sure the data was useful, practically not just numbers.”
Adam
Experienced runner, aiming for a sub 2hr20 marathon
“This is a really great service to inform runners of where their thresholds actually are. They can use the data to inform their training rather than leaning towards overtraining, fatigue and injury”
Andrew
Performance and Fitness Coach, training for 10k and Hyrox races
“Really great service to have in house at Team Rees and I'm looking forward to seeing how my training improves my numbers!”
Abbie
Personal Trainer
“As a mum of two young kids I really struggle to fit my own workouts in around clients. This test has given me the data to structure things much more efficiently”
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Charlotte
Completed first marathon
“I work long hours and can only train a few times a week. Learning about my body was vital in making sure every session counted.”
Bodger
Hyrox Elite Athlete, Owner of KORE Gym, Newport
Multiple Hyrox flags won, Bodger is knocking on the door of Elite 15. Since opening KORE, he has become time constrained and needs to train efficiently.
Jake
Hyrox athlete
“Found out my engine was more developed than I thought so I had the confidence to push myself on the runs and cardio stations”
Amy
Very fast runner!
“I had been stuck at a plateau for a long time. This helped me break through and achieve my best ever time of 1hr30 for the half marathon.”
Lauren Stockley Charlie Searle
Hyrox Elite 15 athletes
Lauren and Charlie race at the top level of Hyrox! As regular clients, our tests help them precisely understand their bodies but also to learn more about each other. They gain insights regarding where to focus their training for both solo and double races and how to work together on the course!
Mark
Endurance Cyclist
“Very clear and very well explained. I now know exactly how to improve”
Tom
Training for a half marathon
“I thought I was training hard enough but going nowhere. The test showed me I was spending almost all my time in the wrong zones. I got faster within weeks of proper training. Thanks”
Harleen
Fitness Enthusiast
“I nearly didn't book because I thought this was only for elite athletes. The earlobe prick was nothing and I got my report in two days. Now I run three times a week instead of four but I'm improving faster!”
Phil
Elite 15 coach
“Data is really important...without it you are basically just guessing. I'm really up for putting myself and my clients through these tests to get the most out of training!”
Jordan
Hyrox athlete
“I took the test because I was never sure about my Hyrox running pace. I either went out too fast or had too much left in the tank. The results showed me exactly where my thresholds sat and gave me a precise pace to target.”
Dave Tonge
Founder of Heathwood Triathlon, Multiple Ironman Finisher
“I have Ironman Wales in a months time and the London Marathon next year. I now know exactly where my body is at for this Ironman and know what I need to work on for the marathon!”
Marc
Endurance Athlete
“The data will really help my run coach and I in preparing for a Backyard Ultra”
Richard
Owner of Team Rees Group
“The service is doctor-led, so you feel confident and reassured that the results are accurate and professionally delivered.”
Matt
Hyrox Elite Athlete and UFIT Coach
“I needed to get this test but had a negative experience elsewhere. This was so professionally done and they made sure the data was useful, practically not just numbers.”
Adam
Experienced runner, aiming for a sub 2hr20 marathon
“This is a really great service to inform runners of where their thresholds actually are. They can use the data to inform their training rather than leaning towards overtraining, fatigue and injury”
Andrew
Performance and Fitness Coach, training for 10k and Hyrox races
“Really great service to have in house at Team Rees and I'm looking forward to seeing how my training improves my numbers!”
Abbie
Personal Trainer
“As a mum of two young kids I really struggle to fit my own workouts in around clients. This test has given me the data to structure things much more efficiently”
Charlotte
Completed first marathon
“I work long hours and can only train a few times a week. Learning about my body was vital in making sure every session counted.”
Bodger
Hyrox Elite Athlete, Owner of KORE Gym, Newport
Multiple Hyrox flags won, Bodger is knocking on the door of Elite 15. Since opening KORE, he has become time constrained and needs to train efficiently.
Jake
Hyrox athlete
“Found out my engine was more developed than I thought so I had the confidence to push myself on the runs and cardio stations”
Amy
Very fast runner!
“I had been stuck at a plateau for a long time. This helped me break through and achieve my best ever time of 1hr30 for the half marathon.”
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Your body's data, made simple and actionable.
Professional athletes don't guess. They test, train precisely and keep improving. That same ability is now available to you.
Your threshold profile
Tap or hover the lines or labels to learn what they mean.
Training zones
The lactate curve is included in the Lactate Threshold and Comprehensive Athlete Profile.
Doctors in your corner. Science on your side.
We saw that the testing elite athletes rely on to improve and strategise was out of reach for most people, so we built FitnessCheck to change that.
Sim
Anaesthetic & Intensive Care Doctor (Resident)
Runs most days. Competes in Hyrox with his wife and Canicross with his dog.
Luke
Anaesthetic & Emergency Medicine Doctor (Resident), Sports Scientist, Former elite level swimmer
Holds a Sports Science degree on top of Medicine and regularly competes in Hyrox, CrossFit Games, Triathlon and Ironman.
Tayla
Dentist, design, lab experiment
Fills many roles at FitnessCheck and is often the subject of testing. She is an avid runner and also trains for Hyrox.
Tofu
Chief Motivation Officer
athlete with a above 200 (but refuses to comply with formal testing). Motivates the team every day.
Simple and transparent
No hidden fees.
We offer discounts for group bookings. Send us a message with the group size, preferred location and preferred date.
Choose your sport!
VO2 Max Test
1hr appointment
Lactate Threshold Test
1hr appointment
Results guarantee
Your personalised data identified from every test or your money back