A weekly letter about running across countries, aging without slowing down, dogs who changed my life, and the people and places along the way.
Data Overload?
How did you sleep last night? Are you checking your Whoop right now? David Green traces a decade of fitness trackers, from Polar straps in 1999 to Garmin watches, and the day in 2009 he stopped paying attention to almost all of them to relearn how to read his own body.