What are the differences between moderate and vigorous exercise in terms of their intensity levels and impact on physical fitness?
Moderate exercise is characterized by a moderate level of intensity that increases heart rate and breathing, such as brisk walking or cycling. Vigorous exercise is more intense, significantly raising heart rate and breathing, like running or high-intensity interval training. Vigorous exercise typically leads to greater improvements in physical fitness compared to moderate exercise, as it challenges the body more and can lead to increased strength, endurance, and cardiovascular health.