The Secret Genius of Modern Life Season 1 Episode 5

Name: Fitness Tracker
Released: 2022-12-08

Fitness Tracker

S1 E5 Aired Dec 8, 2022 59m

Hannah Fry finds out how 1970s car crashes helped us to count our steps, why WWII dog-fights led to a crucial health monitor and how fitness trackers are even being used to catch killers.

Season 1

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