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hrv |
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| navigate by keyword : heart rate variability hrv ecg brain autonomic nervous system sympathetic parasympathetic stress response rest digest health heartbeat cardiac rhythm chart infographic medical illustration levels balance monitoring analysis measurement cardiovascular explained concept education science physiology outline diagram |
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| Heart rate variability (HRV) is shown with ECG lines, brain, and heart icons, illustrating high and low HRV states. Outline diagram |
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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