Research library
Read the evidence without needing a journal subscription or a decoder ring.
Each brief begins with a real sleep question, explains the studies in plain English, shows how the evidence shaped Rest Coach, and names what the research still cannot prove.
One evidence system, two ways in
Science sets the standard. Research explains the studies.
Science and standards
How evidence shapes Rest Coach
See the product evidence map, claim limits, medical boundaries, and the standard required before Rest Coach can make stronger outcome claims.
See our science standard →Research library · You are here
Plain-English answers to real sleep questions
Read full briefs that explain individual studies, what they found, what they cannot prove, and how each finding influenced the product.
How this library works
Question. Evidence. Product decision. Boundary.
People do not search with paper titles. They ask whether a sleep tracker is accurate, why basic sleep tips failed, or whether an app can really help.
We answer that question first. Then we show the original source, the study design, the finding, the limitation, and the exact decision it influenced inside Rest Coach.
Clinical guideline and systematic review
Why do sleep hygiene tips not fix my insomnia?
Why sleep hygiene alone is not an insomnia treatment
A plain-English look at the AASM insomnia guideline, what CBT-I includes, and why Rest Coach does not treat a checklist of sleep tips as clinical care.
Read the research briefSystematic reviews and meta-analysis
Do sleep apps actually work for insomnia?
Do sleep apps work? What digital CBT-I research really shows
Digital CBT-I can improve insomnia outcomes, but that does not validate every sleep app. Here is what a 2025 meta-analysis found and how Rest Coach treats the evidence.
Read the research briefBehavior science and meta-analysis
How do I make sleep advice actually stick?
Why one specific sleep plan may beat another list of advice
Implementation intentions and motivational interviewing offer a practical lesson: a small plan chosen with the person may be easier to act on than more generic sleep advice.
Read the research briefDigital-health design framework
Can an AI sleep coach personalize advice safely?
What personalized sleep coaching should use, and what it should ignore
Just-in-time adaptive intervention research offers a framework for relevant support. It does not prove that every personalized AI health app improves outcomes.
Read the research briefSmall experimental and feasibility studies
Will writing down my thoughts help me fall asleep?
Can writing a to-do list before bed help you sleep?
A small sleep-lab study and early constructive-worry research suggest that specific cognitive offloading may help some people. The evidence is interesting, not definitive.
Read the research briefSystematic review and expert consensus
Do I need to go to bed and wake up at the same time every day?
How important is a consistent sleep schedule?
Sleep timing and regularity are associated with health and performance, but the evidence does not justify a perfection score or one schedule for every life.
Read the research briefValidation studies and meta-analysis
Can I trust my wearable sleep score and sleep stages?
How accurate are sleep trackers and wearable sleep stages?
Consumer trackers can estimate broad sleep patterns, but they are not sleep labs. Two validation studies show where the data helps and where confidence should stop.
Read the research briefThe trust rule
A cited idea is not a validated product.
Rest Coach can explain why research influenced a feature today. It cannot claim that the feature improves sleep until the actual product is evaluated.
That separation is not timid marketing. It is how a research-minded company earns the right to make stronger claims later.
See the full science and validation standard →