Sleep, researched properly
Most sleep articles sound certain. The research rarely is. HealthFix explains what studies actually found, how strong the evidence is, and where it runs out, in plain language.
Sources we cite and link
PubMed
NIH
Cochrane
CDC
Mayo Clinic
5
Sections, one subject
41
Articles mapped and planned
0
Doses ever published
100%
Claims linked to a source
1
Honest byline, no personas
Where to start
We would rather go deep on sleep than shallow on everything. Each area below is a full section of the site, not a single article.
01
Light, temperature, noise, and routine. Which changes have real evidence behind them, and which ones are repeated because they sound sensible.
02
Wind-down routines, waking at 3am, racing thoughts, and the behavioural methods that clinical sleep research keeps returning to.
03
Why timing often matters more than total hours. Shift work, jet lag, late chronotypes, and what light exposure really does.
04
What your watch or ring can and cannot see. How consumer trackers compare to a sleep lab, and when the numbers start doing harm.
05
How exercise, caffeine, alcohol, meals, and stress connect to sleep, in both directions, and what the research supports.
06
New to the site, or want the overview first. Our main sleep guide connects every section and explains the fundamentals.
If you just want to sleep better
The sleep guide is built around the two systems that decide when you feel sleepy, so you can tell a timing problem from an arousal problem before you change anything.
Most people arrive having already tried the standard advice. Cooler room, no screens, earlier bedtime. When that has not worked, the useful question is not which tip to try next. It is which system is out of step.
The guide walks through how sleep pressure and the body clock work, what the evidence supports for each, and which section of the site matches the problem you actually have.
If you want to check our work
We are researchers and writers, not clinicians. That means credibility has to come from sourcing and honesty rather than from a credential.
Every factual claim on this site links to the study or health body it came from. We use PubMed, NIH, Cochrane, CDC, and major medical centers, and we do not cite a study we have not read.
When the evidence is thin, mixed, or drawn from people unlike you, the article says so on the page rather than rounding it up into a recommendation.
Why trust this site
HealthFix is written by an editorial team of researchers and writers. That limits what we can responsibly say, and it raises the bar on how we say it.
01
If we say research shows something, the source is one click away. We use PubMed, NIH, Cochrane, CDC, and major medical centers. We do not cite a study we have not read.
02
When studies are small, mixed, or done in people unlike you, we say so on the page. A confident article about weak evidence is a worse article.
03
We describe what the research found and what a clinician would look at. We do not tell you what to take, and we point you to a professional for anything that is a real decision.
Our limits, in public
These are not disclaimers buried in a footer. They are rules we apply before an article is written, and they are the reason some topics are missing from this site on purpose.
It covers how sleep works, what the evidence supports, and where to go next based on the problem you actually have.
Medical disclaimer
This site is for general information only. It is not medical advice, and it is not a substitute for diagnosis or treatment from a qualified healthcare professional. Do not start, stop, or change any medication, supplement, or treatment based on what you read here. If you have symptoms that concern you, contact a doctor. If your symptoms are severe or sudden, seek emergency care.