Calibrate / Bio Age

Expanded BioAge Survey

A weighted biological-age survey built from physical function, metabolic health, recovery quality, stress load, longevity behaviors, and social resilience. Complete the core survey to estimate biological age, see the highest-pressure drivers, and identify the fastest levers to recover years.

28 core inputs
7 weighted domains
Top 5 drivers + action plan
Core survey completion 0 / 28 answered
The advanced block is optional. If you enable it and fill those values, the estimate gains a small refinement layer.
Foundation

Starting Point

Chronological age anchors the model. The M/F capture is used where physiologic interpretation is commonly sex-specific, especially in the optional cardiorespiratory fitness block.

The tool is designed for adult users.
Used where sex-specific physiologic ranges matter, especially the optional VO2 max interpretation.
Section A

Physical Function

Mobility, lower-body power, grip proxy, and weekly conditioning receive the largest base weight because they usually compress multiple systems into observable performance.

Weight 25%
Use your usual real-world pace, not a one-time best effort.
Use a standard chair. Set a 30-second timer and count full stands completed without using your hands if safely possible.
Add all Zone 2 minutes from the last 7 days. Zone 2 means a pace you can sustain, breathing is deeper, and you can still speak in sentences but not comfortably sing. Many people track it near 60% to 70% of max heart rate.
Intervals, hill work, hard circuits, or similar efforts.
Section B

Metabolic Health

Direct waist and height entries are converted into waist-to-height ratio. Together with glycemic status, sugar load, and fiber intake, they model baseline metabolic drag and the possibility of hidden risk despite acceptable body weight.

Weight 20%
Measure around the abdomen after a normal exhale, usually near the navel or narrowest point.
If using U.S. units, enter total inches. Example: 5 ft 10 in = 70 inches.
Enter waist and height to compute the ratio used by the metabolic score.
Rough U.S. label guide: 12 oz cola ~39g added sugar, 20 oz sports drink ~34g, flavored yogurt cup ~10 to 16g, bakery muffin often 20g+.
Rough guide: 1 medium apple ~4g fiber, 1 cup cooked oatmeal ~4g, 1/2 cup black beans ~7 to 8g, 1 cup raspberries ~8g.
Section C

Recovery and Sleep

Sleep duration, quality, and wake-time consistency influence every downstream domain. Poor recovery amplifies the effect of nearly every other deficit.

Weight 15%
Section D

Stress and Cognitive Load

These questions model perceived stress, overload, and volatility. Use the last four to six weeks as the reference window.

Weight 15%

For the four stress questions below: 1 means rarely, 3 means sometimes, and 5 means almost always.

Section E

Longevity Behaviors

Smoking, alcohol, coffee, and whether health signals are actually tracked alter both baseline risk and the speed at which problems get corrected.

Weight 10%
Section F

Social and Purpose Signals

Social support and direction do not replace physiology, but they influence stress buffering, adherence, and long-run resilience.

Weight 10%
Enable optional advanced refinement Resting heart rate, HRV, blood pressure, and VO2 max add up to 5% extra refinement if you know them. Plain-language descriptions are included below.
Research Basis

Evidence base used to shape this survey

This survey is an evidence-informed heuristic assembled from public-health guidance and peer-reviewed studies. The scoring model is an inference from this literature, not a direct reproduction of any one validated biological-age instrument.

Interpretation boundary: this output is designed for pattern recognition and prioritization. It does not replace clinician review, laboratory interpretation, or emergency care. If you have symptoms, unstable chronic disease, or alarming blood pressure or glucose readings, use medical care rather than self-scoring.