Sleep Science Blog

Why Waking at a Fixed Time Feels Awful: What Sleep Cycles Have to Do with It

You're getting the hours but mornings still feel terrible. The issue isn't effort. It's where you are in your sleep cycle when the alarm goes off.

Sleep Science

Why You Can't Fall Asleep: A Systems View of Sleep Onset

Struggling to fall asleep isn't about willpower. It's about system state. Learn why your nervous system stays activated at bedtime and how to work with it.

Sleep Science

Sleep Is a System: How to Actually Improve It, Not Just Track It

Tracking sleep scores won't fix your sleep. Learn how sleep works as a system, the three levers that move the needle, and what adaptive technology can do.

Research

From Tracking to Training: The Emergence of Adaptive Sleep Systems

Measurement alone does not translate into meaningful improvement. Discover how adaptive systems are changing that.

Sleep Science

Beyond Sleep Scores: Understanding Sleep as a Biological System

Sleep is not a uniform state. Each stage contributes to cognitive recovery, metabolic balance, and restoration.

Guide

Sleep Health Metrics Guide: Deep Sleep, REM, WASO and More

Wearable tracking has changed consumer awareness of sleep, but the key metrics remain widely misunderstood.

Founder Story

Holly's Story: From Apple Health Sensors to Founding AxiLab

After 12 years building health sensors at Apple, she left to create AI-powered sleep recovery technology inspired by her own journey.