Sleep Optimization
Rest is the fundamental pillar of biohacking. Discover smart rings, EEG headbands, and blue light blocking systems designed to maximize your deep and REM sleep phases, accelerating cellular repair.
Reviews(5)
Samsung Galaxy Ring
We analyze whether the Galaxy Ring is the definitive device for optimizing your sleep and recovery compared to the industry giants.
Oura Ring 4
My honest experience using the new Oura Ring 4. Discover why I threw my Apple Watch in a drawer and how its smooth titanium interior changes everything.
MyHalos Sleep Mask
Review of the MyHalos sleep mask. Discover why 100% light blocking is critical for your REM phase and how this ergonomic design avoids pressing on your eyes.
Lumie Bodyclock Shine 300 Review
An in-depth analysis of the Lumie Bodyclock Shine 300. Discover how this wake-up light optimizes your circadian rhythm and eliminates sleep inertia.
Blue Light Blocking Glasses
Discover the blue light blocking glasses used by Llorente and other elite athletes to protect their melatonin. Review, price, and where to buy.
Comparisons
The 3 Best Smart Rings of 2026: The Post-Smartwatch Era
We pit the Oura Ring 4, Ultrahuman Air, and RingConn Gen 2 against each other. Discover which biometric tracker is best for your finger and forget about subscriptions.
Oura Ring 4 vs Whoop 5.0
Oura Ring 4 vs Apple Watch Ultra 3
Oura Ring 4 vs Coros Pace 4: El Nuevo Estándar en Biometría Deportiva
Oura Ring 4 vs Samsung Galaxy Ring: El competidor que Oura temía
Oura Ring 4 vs Garmin Forerunner 965
Guides and articles
Sleep²: The Third Way to Hack Your Sleep Architecture
Forget the 0-100 scores. Discover Sleep², the technology using lab-grade precision and the Polar H10 to optimize your real recovery.
The Solar Reset: Mitochondrial Melatonin and Red Light
Explore what research is investigating about photobiomodulation, red light, and mitochondrial function, including current limitations and scientific references.
Quick Guide to Choosing Sleep Gadgets
See all reviewsKey Metrics
Ensure the device measures your HRV (Heart Rate Variability) and basal temperature.
Form Factor
If watches bother you while sleeping, prioritize smart rings like the Oura or mattress sensors.
Measure vs Intervene
Do you want to track data or influence your sleep (circadian lights, white noise machines)?