Analyze and visualize your iPhone's Health app data in R

Intro I am convinced that many data scientists and data analysts acquire a peculiar reflex. Any time they suspect (consciuosly or subconsiously) that somewhere data is being collected, they develop an irresistable itch to analyze that data, oftentimes not even knowing where the data is! After purchasing my first iPhone, I quickly realized that its Health app is capable of storing lots of data points. I looked at and analyzed some weight and steps data from my Android phone in the past, but this seemed like a whole new level.
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