// Hacker Noon · 8 May 2026

How I Decoded My Apple Watch Metrics: Taking a Look At The Raw Numbers (Part 2)

Exporting Apple Health data results in massive, messy XML files that are difficult to process. By using a "streaming" parser to filter specific LOINC codes and extracting GPS kinematics from GPX files, I converted 300MB of raw records into clean CSVs. This structured data is now ready to be fed into...

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