Hi all, Just letting you all know (in case you don't already - I found out the hard way), your health data - which includes any activity/workouts/achievements is not backed up via a normal iPhone backup. To ensure that this data is backed up you must either enable backup encryption or backup your iPhone to iCloud. I did an IOS restore after a normal backup, to then find once I did a backup restore that all my health data was lost. Thankfully I've only had the watch for just over a week. A little disappointed though to have lost the data - hopefully it saves someone from loosing theirs.