Silicon Valley's Earliest Self Trackers

Before Apple Watches, Oura Rings and Fitbits delivered mountains of health data to the masses, a group of obsessive self-tracking enthusiasts in Silicon Valley started a movement with the tagline “self-knowledge through numbers.” This was the Quantified Self. From tracking “urges to take aspirin” to using infrared cameras to keep tabs on sleeping positions while snoring, these eccentric knowledge-seekers built a community around technical expertise and an ethos of self-discovery. Reporter Gabriela Glueck traces what happened when self-tracking went mainstream — and how the data-obsessed idealists watched their movement get swallowed up by corporate tech giants with products to sell.  **Further Reading/Listening:** The Quantified Self: Learning to Observe — Gary Wolf, *Workman Publishing Company* Data Overload: Is the 'Quantified Self' Really the Future? — John Fortt, *NBC News* Wearable Health Tech: Helpful Tool Or Health Hype — @TalkingWithDocs, *YouTube*  The cutthroat wearables battle is about more than tracking your fitness — Brent Crane, *The Seattle Times* Wearables, Health-Tracking Apps Are Stressing Users, Causing Harm — Emily Stewart, *Business Insider* The New World Of Wearables: From Health Monitoring To Human Augmentation — Chuck Brooks, *Forbes*  **Read the Transcript** here **Email us at** [**CloseAllTabs@KQED.org**](mailto:CloseAllTabs@KQED.org) **Follow us on** ⁠Instagram⁠ **and** ⁠TikTok⁠ **Credits:** This episode was reported by Gabriela Glueck. Close All Tabs is hosted by Morgan Sung. Our team includes producer Maya Cueva, editor Chris Hambrick and senior editor Chris Egusa who also composed our theme song and credits music. Our intern is Lauren Yoon. Additional music from APM. Audio engineering by Brendan Willard. Audience engagement support from Maha Sanad. Jen Chien is our Director of Podcasts. Ethan Toven-Lindsey is our Editor in Chief. Learn more about your ad choices. Visit megaphone.fm/adchoices