Joatan Cantanhede is the founder and lead researcher at QualitySleep.pro. He has spent several years studying sleep physiology, circadian rhythm science, sleep environment optimization, and the practical tools that help real people sleep better without relying on medication or unproven interventions.
Background and focus areas
Joatan’s interest in sleep science started from firsthand experience managing sleep disruption caused by irregular schedules, light exposure problems, and bedroom environment factors — issues common to millions of people that rarely get addressed with practical, honest information.
His research focus covers:
- Sleep physiology and architecture — how NREM and REM cycles work, what disrupts them, and why deep sleep quality matters more than total hours alone
- Circadian rhythm alignment — the role of light timing, temperature, and melatonin suppression in setting the biological clock
- Sleep environment optimization — evidence-informed approaches to noise, light, and thermal comfort
- Mouth taping and nasal breathing — the research behind nasal-dominant breathing during sleep and where the evidence is strong vs limited
- Sleep product evaluation — hands-on assessment of sleep masks, white noise machines, earplugs, cooling products, and other comfort-focused tools
Editorial approach
Every article on QualitySleep.pro is written with one principle: give readers the most honest, research-backed information available without overstating what the evidence supports. That means citing peer-reviewed studies, distinguishing between correlation and causation, clearly separating tested conclusions from analytical ones, and acknowledging when evidence is limited or mixed.
This site does not accept paid reviews, sponsored rankings, or biased placements. When a product is recommended, it is because it meets the site’s evaluation criteria — not because a commission is available.
The editorial framework is described in detail on the Editorial Policy page. The research methodology behind content is explained on the Research Methodology page.
Content on this site
Joatan has authored all original content on QualitySleep.pro, including:
- In-depth guides on mouth taping, nasal breathing, and sleep breathing habits
- Sleep environment optimization guides covering noise, light blocking, and temperature management
- Product reviews and comparisons across sleep masks, white noise machines, earplugs, cooling pads, and mouth tape brands
- Evidence-based educational content on sleep onset, sleep quality, melatonin, and wind-down routines
Contact
Questions about a specific review, content accuracy, or editorial matters: contact page or directly at contact@qualitysleep.pro.