Final answer:
The recovery time refers to the time it takes for the heart to return to its resting heart rate after exercise. It can vary depending on the individual and the intensity of the exercise.
Step-by-step explanation:
In biology, the time it takes for the heart to return to its resting heart rate after exercise is known as the recovery time. This refers to how long it takes for the heart to return to its normal rhythm and rate after being elevated during physical activity. The recovery time can vary depending on the individual's fitness level and the intensity of the exercise.