Your runs and Apple Health
Where your runs come from
Why Not reads your runs from Apple Health. A run recorded with Why Not on your phone arrives at once; one on your Apple Watch arrives once the phone is in reach and Why Not opens. Runs from the Apple Workout app, Garmin, COROS, Polar and Suunto arrive through Apple Health when their app syncs.
If you run with Garmin, Activities shows Open Garmin Connect at the top: tap it to open Garmin Connect, which sends your new run to Apple Health.