Understanding Cardio Load: What Matters Most in Modern Fitness Cardio load refers to the cumulative effect of repeated exposure to cardiovascular stress on the body.
It's a measure of the intensity and duration of exercise, taking into account factors such as heart rate, blood pressure, and respiratory rate. To grasp cardio load, consider its relationship with fitness and exercise.
Aerobic activities like running, cycling, and swimming can impose significant cardio loads on the body. Strength training and high intensity interval training (HIIT) also have unique cardio load profiles.