Has anyone else experienced this issue? I've already tried unpairing and repairing my watch and that didn't work, so it seems to be an iPhone/iCloud data issue. The odd thing is I have always used iCloud (and the same account), and have data dating back to years ago, but June - September is missing for me. In the Health app, data such as steps are there, but activity/workout info is missing. I've tried turning Health data in iCloud off and on again, and that didn't work. Additionally, I don't think restoring from a backup would help, since as I understand it, Health data is synced to iCloud and not included in the backup.