How many days of data can Apple Watch Fitness * * * watch?

When looking up the mobile phone China, you can click the "Fitness" App with Apple, click the "+"in the upper right corner of the * * * enjoyment page, and send the invitation of * * * to enjoy the fitness record to your friend's Apple ID. After adding a friend, click on the friend's sports information and select "Fight with him" at the bottom. At this time, friends will also be informed of the invitation to the game. After accepting the invitation, the 7-day competition officially began.