Sleep Made Simple cites primary sources for every specific claim. This page lists all sources used across the site with verification dates.
| Source | Claim | Type | Verified |
|---|---|---|---|
| Oura — Gen 4 product page | Oura Ring Gen 4 starts at $299... | primary | 2026-06-01 |
| Sleep Foundation — Best Temperature for Sleep | Core body temperature drops during sleep; cooler rooms facilitate this process... | secondary | 2026-01-01 |
| PubMed — Magnesium supplementation and sleep quality, 2012 | Magnesium supplementation associated with improved sleep quality in adults... | academic | 2026-01-01 |
| Eight Sleep — Pod 4 pricing | Eight Sleep Pod 4 starts at $2,495... | primary | 2026-06-01 |
| American Academy of Sleep Medicine — Practice Guidelines | CBT-I is the first-line treatment for chronic insomnia per sleep medicine guidel... | academic | 2026-01-01 |