Science-backed sleep,
no shortcuts.

What this site is

The Sleep SOP is a sleep improvement resource built on a simple principle: every recommendation we make traces back to a peer-reviewed primary source. Not a secondary article about a study. Not a brand-funded white paper. The actual study, with the actual DOI, linked inline.

Sleep is one of the most evidence-rich areas of health science — yet most of what gets published online about it is either oversimplified, commercially motivated, or simply wrong. We set out to fix that for a general adult audience who want to understand what the research actually says.

Our editorial principles

• 01 Primary sources only. Every factual claim links to the peer-reviewed paper it comes from — not a secondary source, not a press release. If we can't cite it, we don't publish it.
• 02 Balanced where the evidence is mixed. We don't manufacture certainty. Where research is genuinely contested or preliminary — as with melatonin for general insomnia, or cannabis and sleep — we say so explicitly.
• 03 No sponsored science. We do not accept payment to promote specific supplements, devices, or interventions as scientifically validated.
• 04 Updated when the evidence changes. Science moves. When a cited study is superseded, challenged, or revised, we update the content to reflect the current consensus — not the original publication.
• 05 Plain language, not dumbed down. We explain the mechanisms — adenosine, circadian rhythm, sleep architecture — because understanding why something works makes it far more likely you'll actually do it.

Journals we reference

Our content draws from peer-reviewed research published in:

What this site is not

The Sleep SOP is not a medical service. Nothing on this site constitutes medical advice or replaces the guidance of a qualified healthcare professional. If you have a diagnosed sleep disorder — including insomnia disorder, obstructive sleep apnoea, narcolepsy, or restless legs syndrome — please consult a doctor or sleep specialist. The evidence-based interventions we describe (particularly CBT-I) are best delivered by a trained clinician for clinical populations.

Cookies & tracking

This site uses two types of cookies:

Essential cookies remember your cookie preference so we don't ask you every visit. No personal data is collected or shared.

Analytics cookies (only with your consent) use Google Analytics to help us understand how visitors use the site — which articles are read, how long people stay, which pages lead to the quiz. This data is anonymised and aggregated. We never sell it or share it with third parties.

You can change your cookie preference at any time by clearing your browser's local storage, or by visiting the site in a private/incognito window. We honour Do Not Track browser signals.