Which of the following is an indication of good cardiovascular fitness?

The ability to recover quickly after exercise is a key indicator of good cardiovascular fitness. This reflects how efficiently the heart and lungs work to supply oxygen to the muscles during physical activity and then return to a resting state afterward. A well-conditioned cardiovascular system will allow for a faster recovery time, which indicates that the body can effectively manage and adapt to physical stress.

In contrast, a high resting heart rate can signify poor cardiovascular fitness, as it may indicate that the heart must work harder to deliver oxygen to the body. Low endurance levels reflect the capacity to sustain prolonged exercise, and low endurance typically suggests the opposite of good cardiovascular fitness. Frequent shortness of breath during or after exercise can also point to inadequate cardiovascular function and the potential for underlying health issues. Therefore, quick recovery after exercise stands out as a clear sign of a well-developed cardiovascular system.