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What is heart rate variability? What is the normal range (ms)?

Heart rate variability refers to the variation in time between each heartbeat. A normal heart rate for adults typically ranges from 60 to 100 beats per minute. In athletes, it can be even lower, around 50 beats per minute. This variability can be measured in milliseconds (ms) and indicates how consistent or variable the intervals between heartbeats are. It can be influenced by factors such as age, gender, position, and timing of measurement. Measuring heart rate variability can be done by observing your pulse over a few minutes, but the most accurate way is through an electrocardiogram (ECG).