What does Heart Rate measure?

Heart rate specifically measures the number of heartbeats per minute. This metric is crucial for understanding cardiovascular fitness, as it indicates how hard the heart is working during activities. A higher heart rate typically suggests that the body is engaged in more intense physical exertion, while a lower heart rate may be associated with rest or lower levels of activity.

Tracking heart rate can help fitness professionals gauge an individual's exercise intensity and overall cardiovascular health. Additionally, heart rate can be an important indicator for tailoring workouts to the individual's fitness level, ensuring that exercises are challenging yet safe. The other choices, while related to heart function, do not define heart rate as precisely as this option.