Don’t know why, but I was reminded that Simon Willison had a neat
utility to process data exported from Apple HealthKit data,
specifically from an Apple Watch,
Convert an Apple Healthkit export zip to a SQLite database
Includes export instructions from your watch. Worked surprisingly well.
The neat part is that you can then use Datasette and the Datasette cluster map plugin to visualize outdoor workouts on a map. And of course there’s always good old, exploratory data analysis using sqlite and Pandas.