Health Metrics

Modern wearables capture a wealth of physiological data. Learn how to interpret recovery scores, sleep metrics, stress indicators, and other measurements that help paint a complete picture of health and performance.

Articles

Recovery & Readiness

Understanding your body's readiness to perform

What recovery means, HRV-based readiness scores, and training adaptation

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Sleep & Circadian Rhythm

How sleep stages affect autonomic function

Sleep architecture, HRV during sleep, and circadian influence on ANS

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Stress & Mental Load

Physiological markers of stress and cognitive demand

Acute vs chronic stress, allostatic load, and stress biomarkers

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Breathing & Respiratory Rate

The breath-heart connection

Respiratory sinus arrhythmia, breath rate from HRV, coherent breathing

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Activity & Energy Expenditure

Heart rate zones and metabolic demands

Heart rate zones, metabolic equivalents, active vs resting states

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Beyond the Numbers

Health metrics from wearables and clinical devices provide powerful insights, but their value depends on proper interpretation. A "low" recovery score isn't always bad—context matters enormously.

These articles explain the physiological basis behind common health metrics, helping you understand what they measure, their limitations, and how to communicate findings effectively to clients.

Each article offers three depth levels—Simple for client communication, Technical for clinical practice, and Expert for research context.