The Secret Genius of Modern Life — Season 1, Episode 5: Fitness Tracker
Documentary • 59 min • 3 seasons, 17 episodes • ★ 7.5/10
Episode synopsis
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.
About The Secret Genius of Modern Life
Hannah Fry uncovers the secrets behind the miraculous technologies of the modern world, revealing the mind-blowing stories behind their invention.