social segments + body scan

· Zi Wang · 1 min read

Z / Runner 🏃🏻‍♂️

🏃🏻‍♂️ going deeper to port longevity thru the lens of "strava", effort > charts. Build on visible interventions & adaptation. Interventions: fasts, sleep habits + circadian hygiene, zone 2, strength training, VO2max blocks. Adaptation = change in VO2max, HRV (heart rate variability), RHR (resting heart rate), A1C (hemoglobin a1c), waist, grip strength, facial jawlines (vanity metrics), gait.

  • 🏃🏻‍♂️ Design "atomic habits", make intervention-days & delta the core social primitive, not steps, calories, or which biomarkers (these are for the 1% not the mass). Hooray = recognition of sustained, hard-to-fake effort: long streaks, adherence to a tough protocol, big (daring) improvement goals. Goal is to connect social currency of longevity with daily routines and show people the compounding effect. Healthspan utility → identity-formation.

  • 🏃🏻‍♂️ Design longevity segments, Strava has micro-features over real-terrain (i.e. central park loop), and people can repeat/compete to become the king/queen of "segments". It creates an infinite async competition for everyone. Why not create a longevity segment = time x biomarkers x protocol? For example, 30-day HRV reboot, our 1% fat loss challenge, 90 day LDL-P, A1C cut. Key is to compete on % improvements AND duration, not genetics or diagnostics/genetics. Success metrics = rank on w/w, m/m, q/q % in peer cohort (NOT absolute markers) AND sustained effort. because most metrics (e.g. weight, % fat…) will converge or reach a steady-state. AVOID toxic competition, make it fair and accessible.

  • 🏃🏻‍♂️ prosumer grade lidar scanners: DJI Zenmuse L2, ATG, 3DMakerpro.

  • 🏃🏻‍♂️ app such as polycam 3d scanner, worthwhile to explore more in the future (p2/p3), combine matterport tech w/ character.ai (digital twins). Big potential to make something serious (dexa scan) into something that's biomoprhic and fun using ai (i.e. nano banana). Pixgenie, W.T.V.

  • 🏃🏻‍♂️ DEXA (dual x-ray absorptimotry) scans uses a very low dose of ioizing radiation. So a monthly scan maybe fine, especially if the cost is adjusted.

Stephen / Basketball 🏀

  • 🏀 any quantitative / easy measures for jawlines / gait?
  • 🏀 deltas on diet / sleep converge quickly over weeks – once habits form, most abandon food logging and do not act on their sleep scores. deltas on exercise degenerates to mostly strava / fitness tracking?
  • 🏀 re: "segment kings", i loved foursquare's mayors of hyperlocal social.

🏀 re: health proxies, the most useful / vanity are belly fat % + muscle mass. dexa scan is 0.5% accurate. how to infer both easily?

  • $10k fit3d / styku optical scanning: no permit, home portable.
  • iphone (zozofit, methreesixty, bodymapp): create 3d avatar (for our strava! digital twin!), much like matterport (my fav tgi project / guest).
  • lidar scanner (millimeter precision) + truedepth camera + gussian 3d model.
  • 🏀 sadly, no lidar specialized for body scan?
  • 🏀 sadly, no good app for body scan?

🏀 re: scaling to millions, do dexa scans at $10 weekly. 15-min scan of a $100k machine operating at 24/7 is $3 cost.

  • $100k hologic horizon dxa system model a (per kalos palo alto). 4-hour dexa x-ray permit.
  • log all activities 24 hours before scan to calibrate, keep body photos over months to track progress.
  • 🏀 i wanted it (measuring impact) every day.