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Gary Isaac W.


Co-founder, Quantified Self


San Francisco, CA

Organizer since:

July 31, 2008


Are you gathering any personal data?

I track a wide variety of things depending on what I might be curious about at any moment: blood pressure, weight, sleep, mood; my activities, the number of words I write, my maximum heart rate during exercise. I don't track everything every day - my tracking is curiosity driven.

Doing any experiments or analysis?

I manage my hypertension through self-tracking. I "discovered" something for which ample evidence exists already: blood pressure and weight are correlated. A few years ago my doctor (at the time, I've since switched) recommended I begin taking blood pressure medication for borderline hypertension. I looked at some of the information available online and discovered that it is common to prescribe these medications based on a single measurement in a doctor's office, and that many people require more than one medication. These have side effects. I started measuring BP regularly, and lost a very modest amount of weight. (8 lbs, going from 178 to 170.) My BP returned to normal range.


What did you do? How did you do it? What did you learn?

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