About Marco Altini
HRV4Training's Substack by Marco Altini provides in-depth analysis and updates on Heart Rate Variability (HRV) in the context of health and performance. This newsletter explores the science and practical applications of HRV for topics such as training load, cardiorespiratory fitness (VO₂max), stress management, and metabolic flexibility. Readers will find factual discussions on using HRV to guide training, understand readiness, and apply biofeedback techniques.
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