1, try to connect with your mobile phone, otherwise you will lack GPS positioning and the movement distance data will be inaccurate.
2. My Watch > General > Wrist Detection must be turned on (default).
3. my watch > in terms of health, the data of birthday, gender, height and weight should be accurate.
4. My Watch > General > During exercise and fitness, the heart rate and fitness tracking functions should be turned on.
5. my watch > during fitness activities, all switches should be fully opened as much as possible.
In addition, iPhone settings >; Privacy >; Location service > In the system service, motion correction and distance suggestion should also be turned on to better correct the data related to motion distance.
Then through the watch's heart rate test, health activities, fitness situation, heart rate, steps, distance, calorie consumption and other fitness data. Will be collected and can be used in Health > of iPhone: Health Data > Check in Fitness Data. In the future, if Apple introduces a smart strap, it may be able to collect more health data.