Terms of Use
A short summary of how A Better Life may be used and what to expect from the tools.
General guidance, not medical advice
The tools and articles on this site are for general guidance only. They are not a substitute for professional medical, psychological, or clinical advice. If you have persistent sleep issues or other health concerns, please consult a qualified clinician.
No warranty
This service is provided as-is. While we try to base recommendations on commonly accepted sources, we do not guarantee the completeness, accuracy, or suitability of any output for a specific purpose.
Restricted use
Do not use the service in ways that place excessive load on the infrastructure, violate applicable laws, or infringe the rights of others.
References (Sources)
"References" on this site refers to the primary sources behind our recommendations — for example, around sleep duration or the 90-minute sleep cycle. We prioritize public institutions and well-established medical bodies, then peer-reviewed reviews, and only individual studies when necessary.
Main sources we rely on
• CDC / NIH — adult recommended sleep duration (7–9 hours). • AASM (American Academy of Sleep Medicine) — age-based sleep duration guidelines. • Japan's Ministry of Health, Labour and Welfare — Sleep Guide for Health Promotion. • Sleep Foundation — sleep cycles, sleep hygiene, jet lag guidance. • Cleveland Clinic — sleep hygiene, 4-7-8 breathing, fatigue after full-night sleep. • Mayo Clinic — general sleep tips and sleep apnea information. • Harvard Health Publishing — resetting the circadian clock for jet lag. • NPR — reporting on wind-down routines and bedtime rituals. • Selected books and review papers (e.g., Walker, "Why We Sleep").
Updates
When we add new sources or change the evidence base behind a tool, we will update this page. See the rule documented in the project's CLAUDE.md.
Contact
Questions about these terms can be sent to [email protected].