Practical sleep education
Sleep Classes
Explore Sleep 101, Sleep 201 and Sleep 301 online, or open their printable PDFs.
Sleep education for adults. General information, not individual medical advice, diagnosis, or treatment.
Sleep 101
Sleep 101: How Sleep Works
An illustrated introduction to the science of sleep.
The two-page PDF introduces sleep stages, your body clock, sleep pressure and why sleep matters.
Sleep 201
Sleep 201: Why Sleep Gets Disrupted
Five education-only lessons on why sleep gets disrupted.
A two-page printable class for adults. Published October 2026.
Sleep 301
Sleep 301: The Science of the Sleeping Brain
Explore REM sleep, electrical rhythms, memory processing and sleep measurements in this illustrated adult class, with sources and a printable PDF.
A three-page printable class for adults, including sources and evidence notes. Published October 2026.