Take heart data as an example:
Users can get data by connecting their mobile phones with related heart rate detection devices. (Take mi Band as an example here)
After the user links the iphone 6 to the mi band, the mi band will monitor the user's heart rate data and upload it to the mobile phone. Users can observe the heart rate amplitude through health software, and then get heart rate data.
If users want to get other data, they can connect other related devices: for example, they can get their height and weight through intelligent weighing scale. The sleep state can be obtained through related smart wearable devices.