Seven things
a calendar
can't measure
Your age is a fact. How old your body actually performs is a number you can change.
What you need
What gets measured
No lab work. No wearable. Every one of these predicts how well you'll be moving in ten years better than the number on a scale does.
Your last result
functional age
Takes about ten minutes. Stop any movement that hurts — skip it and mark your best honest guess. If you have a heart, joint or balance condition, check with your provider before the stair test.
Where the years came from
What would move it most
The Recovery & Joints Field Guide
Free, and it goes straight to your inbox.
You'll get the guide, your scored breakdown, and a reminder in 30 days to run the test again. Unsubscribe any time.
Then what
Each measure is compared to the typical result for your age and sex, then converted into years and added up. It is a fitness and function estimate, not a laboratory measurement of biological age.
A wellness and education tool. This test does not diagnose or treat any condition, and it does not provide medical advice or guidance on medication. Results are an estimate based on self-reported measurements. Talk with your own healthcare provider before starting or changing any exercise, nutrition or treatment plan.
© 2026 Stay In The Game Performance. Clinical care and prescription products, where offered, are provided through PepDrive365 and our affiliated medical practice.