Fitness Tracker

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.

My Thoughts

Guest Stars

Special appearances in this episode.

Guest Stars

No guest stars available.

Crew

Episode-specific crew credits.

Nick Davis

Sound Editor

Sound

Stiv Twigg

Producer's Assistant

Production

John Pineda Thomson

Producer's Assistant

Production

Declan Healy

Director

Directing

Valerie Mellon

Producer

Production

Lyndon Bruce

Director

Directing

Hugh Scott

Sound

John Wilson

Film Processor

Crew

Videos

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Videos

The Science Behind Toughened Glass | BBC Earth Science

Clip

How Durable Is A Fitness Tracker? | The Secret Genius of Modern Life | BBC Earth Science

Clip

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Stills

Still

1920 × 1080