Moderate-intensity exercise involves activities that elevate the heart rate and induce sweating while still allowing for conversation. These activities might include brisk walking, light jogging, biking at a comfortable pace, or engaging in recreational swimming. The key distinction of moderate-intensity is that a person should feel slightly out of breath but not overly fatigued. This level of intensity provides substantial health benefits, such as improved cardiovascular fitness, weight management, and enhanced mental well-being, making it an essential component of a balanced fitness routine.