Train Fitness syncs with Apple Health to centralize your health data. Apple Health permissions are required to log workouts on Train Fitness. Workouts logged on Train Fitness close fitness rings and update Apple Health directly.
To update Health Permissions on your iPhone:
Navigate to "Settings > Health > Data Access & Devices > Train Fitness."
Tap "Turn on All."
To update Health Permissions on your Apple Watch:
Navigate to "Settings > Health > Data Access & Devices > Train Fitness."
Tap "Turn on All."