The largest earthquake to hit California’s Napa Valley in 25 years struck near the Bay Area early Sunday morning. The 6.0-magnitude quake hit at 3:20 a.m. local time near American Canyon, about 6 miles southwest of Napa, at a depth of 6.7 miles. Nearly 90 people were injured—and countless more woken up, disturbed, and generally freaked out. Thanks to the quantified self phenomenon—the always-on activity and sleep trackers many people now wear—we know more than ever about the psychic effects of such an event.
Jawbone, the San Francisco-based maker of fitness trackers, analyzed data from its users to see how the quake affected sleep across the Bay Area. The company’s UP device is a slinky bracelet that monitors movements and sleep. Here’s what Jawbone found:
Napa, Sonoma, Vallejo, and Fairfield were less than 15 miles from the epicenter. Almost all (93%) of the UP wearers in these…
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