Every entry.
All 69 Vital Codex entries, newest first. Tier I is free and open to everyone; Tier II adds the full mechanisms, dosing detail, and citations.
Light Timing and the Circadian Clock
Light is the strongest signal your body uses to set biological time. Most modern sleep complaints are a light-timing problem before they are a sleep problem.
Nasal Breathing and CO₂ Tolerance: The Overlooked Variable
Breathing is treated as an oxygen problem when it is mostly a carbon dioxide problem. The distinction changes what good breathing looks like.
Sauna and Heat Therapy: What the Evidence Supports
Frequency matters more than temperature. The cardiovascular and mortality data on regular heat exposure are stronger than most recovery interventions.
Natural Support for Occasional Trouble Falling Asleep
A calm, non-medical overview of what actually helps sleep onset — evening architecture, autonomic regulation, and where botanicals fit into the picture.
The Glymphatic Protocol: Optimizing Neural Clearance via Sleep Architecture
The brain's waste-clearance system runs almost entirely during deep sleep. Here is what governs its throughput — and what reliably degrades it.