Vigorous-intensity activities typically involve working at what percentage of one's maximum heart rate?

Vigorous-intensity activities are defined as those that require a significant effort and elevate the heart rate to a level where an individual is working at a high percentage of their maximum heart rate. Generally, the intensity of such activities is categorized at approximately 60% to 90% of an individual's maximum heart rate, with the higher end of that spectrum typifying vigorous exercise.

When engaging in vigorous-intensity activities, individuals typically experience increased breathing, difficulty in maintaining a conversation, and a heart rate that reflects this elevated effort. This range signifies that the body is working hard, demanding more oxygen, and leading to greater physical benefits, such as improved cardiovascular fitness, strength, and metabolism.

While lower percentages, such as those associated with moderate-intensity activities, allow for less exertion and can still provide health benefits, they do not hit the vigorous level that is typically expected to be marked at or above 60% of maximum heart rate. Therefore, the correct characterization of vigorous-intensity activities aligns with the understanding that they engage the body to a greater extent, supporting the need for a heart rate range that taps into higher physical challenges.