Health Foundations

The daily practices that determine your health over years. Each one compounds.

Sleep

Sleep governs cognitive performance, emotional regulation, hormonal balance, immune function, and physical recovery. It is not passive downtime — it is the most high-leverage maintenance activity available to you.

1 chapterUpdated Jul 2025

Food & Nutrition

Food is information for your cells. What you eat determines your energy, cognition, hormonal function, inflammation levels, and longevity trajectory.

11 chaptersUpdated Jul 2025

Movement & Exercise

The human body is designed for movement. Regular physical activity is the single most evidence-backed intervention for longevity, mental health, metabolic function, and quality of life.

1 chapterUpdated Jul 2025

Stress & Recovery Systems

Chronic stress is a physiological state, not just a feeling. Sustained cortisol elevation damages the cardiovascular system, suppresses immunity, disrupts sleep, and impairs memory. Recovery is not laziness — it is when adaptation happens.

1 chapterUpdated Jul 2025

Substances

Caffeine, alcohol, and other substances are among the most used and least examined inputs in most people's lives. Understanding how each one actually works allows you to make informed choices rather than defaulting to habits or social norms.

1 chapterUpdated Jul 2025

Preventive Care

Most of the diseases that will kill or disable people in wealthy countries are detectable years before they cause symptoms. Screening and preventive interventions — at the right ages, with the right frequency — are among the highest-leverage health investments you can make.

1 chapterUpdated Jul 2025