Personal experiment / digital twin / est. 2025

A body,
in data.

Jon-Kristjan

A living readout of Jon-Kristjan, assembled from signals collected in everyday life.

Explore the data 43.6532° N / 79.3832° W
01 / Latest readings

Health and activity data from a typical day.

Heart rate
— BPM
Awaiting public reading
Steps
— TODAY
Updated Hourly
Sleep score
— / 100
Updated Daily
Weight
— KG
Updated Daily
02 / Connected systems

The devices collecting the data.

01 / ActivityConnected ↗

Smart
Watch

Heart rate, steps, sleep stages, stress, and VO₂ max — synchronized hourly from a Garmin Venu 3.
02 / Body compositionConnected ↗

Smart
Scale

Weight, body fat, BMI, and muscle mass — synced on every weigh-in from a eufy Life Smart Scale.
03 / CardiovascularPending

Smart
BPM

Systolic, diastolic, and pulse — synced after each reading from a Homedics BPM.

04 / Sleep & recoveryPending

Smart
Ring

Sleep stages, readiness, and skin temperature — synced nightly from an Oura Ring.

05 / Open slotFuture data

More sensors,
more context.

More data sources and devices can be added over time.

03 / Why this exists

A long-running personal experiment in collecting and presenting health and activity data.

This site is a personal digital twin built from devices Jon-Kristjan uses in daily life. Aggregating data from several smart devices, with more sources to come.