To enjoy the fitness record, you and your friends need an Apple Watch. When your friends fill the circle, complete physical training or achieve success, you will be informed of their progress.

Open the fitness record app on the iPhone. Click * * * to enjoy the tab. If asked, click "Start Using". Tap the Add button, and then enter your friend's contact information. Or choose a friend from the suggested contact list.

You can add up to 40 friends. After selecting a friend, tap Send. Wait for your friend to accept the invitation. You can also invite friends directly through Apple Watch: open the fitness recording application, slide to the * * * enjoyment screen, scroll down, and then click Invite Friends.

When someone invites you to * * * enjoy the "Fitness Record" or compete with each other, your Apple Watch will display a notice.