How to Enable (or Disable) Motion & Fitness Tracking with iPhone
Newer iPhones have the ability to track fitness activity and motion and displaying that data in Health app and other applications. Fitness tracking is done by using a low-power motion coprocessor that determines steps, altitude gain and lost, and distance traveled, and many users like this feature as it represents an easy way to keep an eye on their activity levels, and perhaps work towards that goal of an active 10,000+ steps per day.