If Bend isn't syncing with Google Health Connect on Android, here's what to check. This applies to Android.
Check your Android version
Health Connect in Bend needs Android 14 or later. If you're on an older version, the Health Connect option won't appear in Bend.
Check Bend's permission
Open Bend, go to the Profile tab, and tap Health Connect. Make sure Sync with Health Connect is turned on, then tap Manage access and confirm Bend is allowed to write your stretching sessions. To see how to use it, check How do I connect Bend to Health Connect?.
Try again
If it still isn't syncing, turn Sync with Health Connect off and back on, then close Bend completely and reopen it.