Each tap mints a URL that has never existed before, so ChatGPT's fetch cache has no copy of it and is forced to actually call the server. Reusing an old link is what makes it quote stale numbers.

Blank fields are skipped, not zeroed. Everything saved here is tagged manual and never overwrites a health connect value — both are kept.

R² is how well a straight line fits. Below ~0.3 the "per week" figure is noise, not a trend — usually too few points.

Averages per day. Δ compares to the previous week, and is blank when that week has no data.

Height drives BMI. BMI is computed on read, so correcting height fixes every past day at once.

Exactly what the phone sent, stored untouched — this is how we find out what Samsung Health really exports.