Name: Why We Sleep
Availability: InStock
Author: Mathew Walker

Key Ideas

Chapter 1 The Invisible Epidemic of Sleeplessness

Sleep is not a passive state but a highly active biological necessity. By understanding the intricate cycles of REM and NREM sleep, you can actively p…

Chapter 2 The Symphony of the Night 🔒

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 The Brain's Nightly Wash Cycle 🔒

🔒 Unlock in the Zehn app

Chapter 4 The Physical Shield 🔒

🔒 Unlock in the Zehn app

Chapter 5 Reclaiming Your Biological Right 🔒

🔒 Unlock in the Zehn app

Chapter 6 Conclusion: The Ultimate Medicine 🔒

🔒 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 14 min
Speed control from 0.5× to 2×
Ask AI any question while listening
Sleep timer & bookmarks built in

← Why We Sleep

☰

⋮

🤖 Ask AI

🔖 Bookmarks

1:41 14:07

↺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

Why We Sleep

In Why We Sleep, Matthew Walker reveals the groundbreaking

science of slumber. This immersive summary explores how

prioritizing rest enhances memory, fortifies your immune

↺

↻

Why We Sleep

Listen to the Full Summary

Follow Along Word by Word

Listen Free on Zehn