What Is Athletic Age? (And How It's Different From Biological Age)
Athletic Age is the age your body performs like. It's calculated from real tests of strength, power, endurance and mobility, and adjusted for your sex. If you're 45 but you test like the average 39-year-old, your Athletic Age is 39. Unlike biological age, which comes from lab tests of your cells or blood, Athletic Age measures what your body can actually do, and you can change it in a matter of weeks.
Find your Athletic Age free with The Weekly Combine
Athletic Age in one sentence
Your Athletic Age answers a simple question: how old does your body perform? Not how old it looks, not what your birth certificate says, but how it moves, lifts, jumps and lasts compared with people of different ages.
What Athletic Age measures
Athletic Age is built on four pillars, because being fit is more than one thing:
Strength: how much force you can produce. Think push-ups, holds and lifts.
Power: how fast you can produce force. Think jumps and explosive moves. Power tends to fade faster with age than strength does, which is why it gets its own pillar.
Endurance: how long you can keep going. Think a mile run, a swim or a long hold.
Mobility: how freely you move. Think sit and reach and range of motion.
Most people are strong in one or two of these and quietly falling behind in another. A runner might have great endurance and the power of someone 15 years older. A lifter might be strong but stiff. Athletic Age blends all four into one honest number.
Athletic Age vs. biological age vs. fitness age
These three terms get mixed up a lot. Here's the difference.
Chronological age is the number of birthdays you've had. You can't change it.
Biological age estimates how old your body is at the cellular level, usually from blood markers or DNA methylation tests (often called epigenetic clocks). It's interesting science, but it usually needs a lab kit, can be expensive, and changes slowly. It doesn't tell you what you can do on a Saturday morning.
Fitness age, as used by many wearables, is usually estimated from one measure: your VO2 max, which is your cardio fitness. It's a useful number, but it only covers endurance. You could have a great fitness age and still struggle to get up off the floor without your hands.
Athletic Age is based on how you perform across all four pillars. It comes from tests you actually do, not a wrist-sensor estimate or a blood draw, so it shows strength, power and mobility too. And because it's based on performance, it can move in a few weeks of training.
Why Athletic Age matters after 30
From your 30s on, fitness doesn't drop all at once. It slips a little at a time, and unevenly. Power and muscle tend to go first. Most people don't notice until something they used to do easily, like sprinting after a kid, carrying a heavy bag up the stairs or getting off the floor, suddenly feels hard.
Athletic Age catches that slide early. It shows which pillar is slipping while there's still plenty of time to fix it. And the upside is big: the same research that shows decline with age also shows that adults who train stay far more capable than people who don't, well into their 60s, 70s and beyond.
How to find your Athletic Age
The easiest way is The Weekly Combine, a free iPhone app built around it.
Download the app and set up your profile (age and sex, so your targets are fair).
Take the Weekly Combine. It opens every Saturday with four benchmarks, one from each pillar. You can retake them all week; your best result counts.
Get your Athletic Age. Your results, plus how consistently you show up, roll into one score.
Do the daily drill. About four minutes a day, Sunday through Friday, to build your Momentum streak and keep improving.
Bring your crew. Invite friends and rank by Athletic Age. There's nothing like seeing your buddy's number drop below yours to get you moving.
Get your Athletic Age on the App Store
How to lower your Athletic Age
The good news: Athletic Age responds to training, often faster than people expect.
Work your weakest pillar. Your Combine results show which one is pulling your score up. A little focused work there moves the number fastest.
Train power, not just strength. Jumps, throws and quick bodyweight moves. This is the pillar most adults over 40 ignore.
Show up consistently. Your Athletic Age rewards consistency, not just big efforts. Four minutes a day beats an hour once a week.
Keep mobility in the mix. A few minutes of stretching or mobility work a day adds up.
Re-test every week. You'll see what's working and what isn't.
FAQ
What is Athletic Age?
Athletic Age is the age your body performs like, based on tests of strength, power, endurance and mobility. It's the core score in The Weekly Combine app.
Is Athletic Age the same as biological age?
No. Biological age estimates how your body is aging at the cellular level, usually from blood or DNA tests. Athletic Age measures what your body can actually do, based on physical performance tests.
Is Athletic Age the same as fitness age?
Not quite. Fitness age on most wearables is based mainly on VO2 max, which measures cardio fitness. Athletic Age covers strength, power, endurance and mobility.
Can you lower your Athletic Age?
Yes. Because it's based on performance, Athletic Age can improve within weeks of consistent training, especially if you work on your weakest pillar.
How do I find my Athletic Age?
Download The Weekly Combine free on the App Store and take the weekly Combine, four short benchmark tests. Your results produce your Athletic Age.
What's a good Athletic Age?
Any Athletic Age below your real age means you perform better than average for your age. But the most useful comparison is with yourself: a lower Athletic Age than last month means you're getting fitter.
Find out how old your body really is
You already know your real age. Find out your Athletic Age, then see how low you can take it this year.