The Body Test

Category 03 · Lifestyle

Lifestyle

Four habits with outsized, well-documented effects on how you age — tracked honestly, not moralized.

Lifestyle · Age Readout0/4 inputs

Scoring for this category is still being researched — your inputs below are saved and ready for when it ships.

A directional, educational estimate built on published research — not a clinical measurement or a diagnosis.

Inputs

Habits, not one-time measurements — answer honestly, nobody sees this but you.

What moves it

  • Quitting smoking at any age produces measurable risk reduction within years, not decades.
  • Sleep quality affects nearly every other category on this site — recovery, metabolism, mood, and injury risk.
  • Consistency in exercise frequency matters more than intensity for most long-term outcomes.
  • Alcohol's effects are dose-dependent — the trend over months matters more than any single week.

Solutions, scaled to you

A low score is never a dead end — it just changes where you start. Pick whichever matches what’s actually available to you right now.

On your own

  • Track sleep and exercise for two weeks before changing anything — a real baseline beats guessing.
  • Set a specific, small exercise-frequency target and hit it consistently before raising it.

Go deeper

Deeper reading for this category is coming soon.

This category’s Age formula hasn’t been built yet — structure is in place, inputs you log now are saved and ready.

Ready to change a habit

Want to actually move that number? the relevant DIY Body Lab program at DIY Body Lab is built for exactly this.