Name: Spark
Availability: InStock
Author: John J. Ratey & Eric Hagerman

Key Ideas

Chapter 1 Your Brain Is Built to Move

Exercise grows brand-new brain cells in the hippocampus, even in adults well into their sixties. Just 20 minutes of aerobic movement before school cut…

Chapter 2 The Brain Chemical Revolution 🔒

Lorem ipsum dolor sit amet consectetur adipiscing elit sed do eiusmod tempor incididunt ut labore et dolore magna aliqua ut enim ad minim veniam quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.

🔒 Unlock in the Zehn app

Chapter 3 Stress, Fear, and the Running Cure 🔒

🔒 Unlock in the Zehn app

Chapter 4 Learning Runs on a Moving Body 🔒

🔒 Unlock in the Zehn app

Chapter 5 The Dose That Changes Everything 🔒

🔒 Unlock in the Zehn app

Chapter 6 Start Before You Are Ready 🔒

🔒 Unlock in the Zehn app

Chapter 7 A Body That Thinks 🔒

🔒 Unlock in the Zehn app

Listen to the Full Summary

Zehn gives you a professionally narrated audio summary you can play anywhere — commute, gym, or eyes closed at home.

Full audio summary in 16 min
Speed control from 0.5× to 2×
Ask AI any question while listening
Sleep timer & bookmarks built in

← Spark

☰

⋮

🤖 Ask AI

🔖 Bookmarks

1:54 15:58

↺10

10↻

Timer: OFF

Speed: 1.0×

Subtitle: OFF

Follow Along Word by Word

Turn on Subtitle mode and Zehn syncs live captions to every word as it plays — so you can read and listen at the same time.

Live subtitles synced to audio
Highlight the active sentence
Works in any language
Toggle on or off any time

Spark

Most people exercise to change their body. But John Ratey

reveals the real transformation is happening inside your

skull. Spark unpacks the neuroscience of movement, showing

↺

↻

Spark

Listen to the Full Summary

Follow Along Word by Word

Listen Free on Zehn