Resting Heart Rate How does the Apple Watch measure resting heart rate? VO2 Max What Happened to My Million Rows of Data? How Do We Know What the Health Measures Actually Measure? Appendix: Some of the R Code Used to Make This Post R Code for the ggplot2 Figures Removing ...

This post is Part I of a dive into the contents of the Apple Health Export. It will work through the mechanics of moving data from the Apple Health app out of your iPhone and into R where you can analyze it. It also will describe in detail the problem ...