can i only share  with people i want to share with?
Your foot and clothes size and other personal                 measurement information and activity data that you voluntarily                 share with us through the                 use of the Services, such as weight, height, heartrate, calories burned, steps                 taken, nutritional information, sleep activities, other activity data (type,                 duration and frequency of fitness activities, distance, speed, pace, step                 count) and injuries.