Moderate-Intensity Aerobic Activity Aerobic fitness means
increasing how well the body uses oxygen, which depends on the
condition of the heart, lungs, and muscles. Experts tend to
describe aerobic activity in three ways: light, moderate, and
vigorous. When people do moderate-intensity activities, they
notice a faster heartbeat. To get the benefits of moderate
activity, a person can: The goal of aerobic fitness is to
increase the amount of oxygen that goes to the heart and
muscles, which allows them to work longer. Any activities,
including many kinds of daily activities, that raise the heart
rate and keep it up for an extended period of time can improve
aerobic fitness. If the activities are done regularly and long
enough, they can help improve fitness. Experts recommend that
adults try to do moderate activity for at least 2½ hours a week.
Or they can do vigorous activity for at least 1¼ hours a week.
People can choose to do one or both types of activity. And it's
fine to be active in blocks of 10 minutes or