What type of activity is part of a warm-up?

The correct answer focuses on the purpose of a warm-up, which is to prepare the body for the physical demands of exercise. A warm-up typically includes activities that gradually increase the heart rate, enhance blood circulation to the muscles, and improve joint mobility. This preparation is crucial for reducing the risk of injury and improving performance during subsequent workouts.

High-intensity interval training and strength training do not serve this preparatory role. These activities are more intense and are not suitable for transitioning into an exercise routine. Static stretching, while beneficial, is not the main component of a warm-up; it is often more effective in the cool-down phase when muscles are already warmed up. Thus, the activities that prepare the body for exercise are the most appropriate representation of what a warm-up should encompass.