Your heart rate is the number of heartbeats you have in a minute. Your heart rate depends on what you're doing at the time. So, if you're resting or relaxed, your heart beats slower, and if you're ...
Heart rate variability measures the variation in time between successive heartbeats, providing insights into the balance between the sympathetic and parasympathetic nervous systems, which influence ...
Angela Ryan Lee, MD, FACC, is a board-certified cardiology and internal medicine physician. She also holds board certifications from the American Society of Nuclear Cardiology and the National Board ...
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