This document summarizes an interview study of 22 people who use fitness tracking technologies like apps and devices. The following key points are made:
- People track a variety of health metrics like walking, exercise, eating, weight, and sleep, often using multiple trackers for different purposes like training, weight loss, and sleep.
- Tracking is usually not long-term, but rather focused on specific events or daily goals. Data is rarely shared on social media due to perceptions of egotism.
- Tracking is often a social activity done with families, partners, or coworkers to compare data and progress together.
- Future tracker design should support co-emergence of activities and tracking over time,