Included in all memberships
What is BioAge?
Your Body's Real Age
In One Number.
Your chronological age shows you’re getting older. Your BioAge tells you how well.
Pioneered by EGYM, your BioAge measures how young your body is based on function, not how many years it’s lived. Calculated from scores gathered across Strength, Cardio, Flexibility and Metabolic tests. This figure represents how you perform compared to people of your birth age.
Rank lower, and you’re officially ahead of the average for your age group. Come in above it, and you’ll know exactly where to get to work.
Why it matters
BioAge Is Your Baseline.
A number on its own doesn’t change much. What you do with it does.
Starting with your free 1:1 intro to able – the EGYM system that records each test – our experts walk you through all four scores and what they mean for you.
Genius AI then turns your results into individually tailored Smart Strength workouts designed to improve the scores that need them most.
Whether you follow the programme or build your own routine, retesting along the way means you can visibly track every improvement.
Four Scores. One Complete Picture.
Your BioAge is what you came for. But these four tests are how you get there.
Strength BioAge
Measures how much force you produce relative to your body weight, using an EGYM Smart Strength test on our able system. Because it’s not capped by real age, a younger strength BioAge is in reach if you train for it.
Flexibility BioAge
Tracks how freely your joints move compared with people your age. The guided test on the EGYM Fitness Hub highlights where you're tight, so your mobility work goes where it counts.
Metabolic BioAge
Looks at what your body is made of and how efficiently it uses energy. An extensive body composition scan covers BMI, body fat, skeletal muscle mass among many other markers.
Cardio BioAge
Shows how efficiently your heart and lungs supply oxygen, using VO₂max with blood pressure as a measure. You can add your results from a cardio test or a connected wearable, as well as update them in the Fitness First App.
Your BioAge, Tracked Over Time.
Every reassessment adds another data point. Four scores, four trend lines - each one representing BioAge itself, not just the marker behind it.
Muscle lost with age costs you stability, metabolism and independence later. The score most within your control.
-4yrs
+1.8kg
How efficiently your heart and lungs deliver oxygen - the gold standard for long-term heart health and everyday energy.
-2yrs
+3.1kg
Range of motion shrinks before it's noticed. Keeping it open protects against injuries that stop everything else.
-5yrs
+12%
How efficiently your body handles weight, fat and energy — the score most connected to long-term disease risk.
-2yr
-2.4%
Every Session Moves A Number. Track It In Your Fitness First App.
Genius AI reads your latest BioAge and builds your next session around the score that needs it most - training with purpose, not guesswork.
34 vs. actual age 41
Why it matters
Your BioAge Assessment:
What To Expect.
Your free BioAge assessment is a guided session on the gym floor with a trained expert. You don't need to be fit, or even a member to do it. You just need to turn up.
Here’s how to get the most from it:
Download the app
Get the Fitness First App and create an account before your visit. Your results land there straight after your session, so you’ll be ready to track from day one.
Come as you are
A BioAge assessment can be done in everyday or office clothes, so there's no need to plan around it. But if you'd feel more comfortable in gym kit and trainers, bring them along. Just remember your phone and photo ID, as we may ask for it on arrival.
Allow 20 minutes
That's roughly how long the assessment will take. If you're booking it as part of a tour, set aside a little extra time so you can chat through your goals and explore the club.
Follow our lead
After a quick chat about your goals, you'll do a strength test on Smart Strength, a movement test on the Fitness Hub, then a full body composition scan. You’ll see the kit adjusts to you automatically – so there's nothing to set up.
Keep it going
By the end of your free session, you’ll have your overall BioAge, all four scores and a clear sense of where to focus first. If you’re not a member, what better time to join? Train, retest and see how far you progress.
Book Your Free BioAge Assessment
Already a member? You’ll get your BioAge as part of your three complimentary able sessions.
Progress, Measured In Years
Your BioAge Is Just The Start.
Why Not Go 360?
Meet the 360 Membership. Combining your BioAge baseline with at-home blood testing, 24/7 GP access, and expert practitioner support through Healf.