# Sleep Science

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Category: Health
Slides: 13
Updated: 2026-05-15T22:18:12.919Z
Tags: health, sleep, science

## Summary

A guided night through the body's most repeated and least understood ritual — circadian rhythm, the architecture of stages, the meaning of dreams, and the practice of sleep hygiene. Key sections include: Sleep Science; The most expensive thing you do every day; A 24-hour rhythm built into every cell; Five gears, four cycles a night; An eight-hour night, drawn; A theatre running on a few cents of glucose; Melatonin, cortisol, growth hormone; When the night breaks; The boring tools that work; The room, the bed, the dark.

## Slide Outline

1. Sleep Science
2. The most expensive thing you do every day
3. A 24-hour rhythm built into every cell
4. Five gears, four cycles a night
5. An eight-hour night, drawn
6. A theatre running on a few cents of glucose
7. Melatonin, cortisol, growth hormone
8. When the night breaks
9. The boring tools that work
10. The room, the bed, the dark
11. How coffee works
12. From the experts
13. What the literature says

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