I am a data geek and I’ve been collecting data about me for the last eight years. Data like weight, fat percentage, Resting Heart Rate… — I am a data geek and I’ve been collecting data about me for the last eight years. Data like weight, fat percentage, Resting Heart Rate, Blood Pressure, Glucose levels and recently HRV, SP02, V0Max and a dozen more. Most of these data are tracked automatically by inexpensive hardware.