What intensity level is categorized as vigorous exercise?

Vigorous exercise is typically defined as physical activity that significantly increases heart rate and breathing, allowing one to work at a high intensity relative to their maximal capacity. Exercising at more than 60 percent of one's maximal capacity places the individual in the vigorous intensity category. This level of exertion is characterized by the ability to speak only in short phrases, indicating that the body is working hard and oxygen consumption is high.

This intensity provides substantial health benefits, including improved cardiovascular fitness, increased calorie burn, and greater endurance development. Hence, characterizing vigorous exercise as above 60 percent of maximal capacity adequately encompasses the necessary effort and physiological responses elicited at this level.