Compare biological aging between friends. Sleep, stress, diet, smoking — see whose body is aging fastest.
What is Who Ages Faster? Bio Age Battle?
The viral biological age comparison for friend groups. Add 2-4 people, enter each person's sleep, stress, diet, smoking, alcohol, exercise, and sun habits — and see whose body is aging fastest based on real research. Features: animated aging race visual, per-person damage breakdown showing top accelerators and protectors, body health halo, "fix one thing" simulator, savage roast cards, and shareable winner/loser badges.
How to Use
Add 2-4 players
Enter each person\
,
,
s top accelerator and protector
Use the "fix one thing" simulator
Share the verdict with your group
Frequently Asked Questions
How is biological age calculated?
Starts with chronological age then adds/subtracts based on research-backed lifestyle factors: sleep deprivation, chronic stress, diet quality, smoking (largest impact), alcohol, exercise, and sun exposure.
Is this medically accurate?
It uses simplified versions of factors used in epigenetic age tests (PhenoAge, GrimAge). Real lab tests are more accurate but expensive. This is for awareness and fun.
Can biological age be reversed?
Yes! Research shows lifestyle changes (better sleep, exercise, quitting smoking) can reverse some biological aging in months.
Is my data stored?
No. All calculations run in your browser.
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