# Data

> Surprising facts, rankings and datasets with primary sources, starting with sleep.

Every fact links to its primary source with sample size, method and a confidence label (solid, debated, single study).

## Topics

- [Sleep](https://karelbusta.dev/data/sleep/index.md): Data and surprising, sourced facts about sleep, from mammals that sleep 20 hours a day to who in America is asleep right now.

- Machine-readable index: https://karelbusta.dev/data/index.json
- llms.txt: https://karelbusta.dev/data/llms.txt
- RSS (new facts): https://karelbusta.dev/data/rss.xml