Aerobic fitness increases how well your body
uses oxygen. Activities that make your heart
beat faster, like walking or running, can improve
aerobic fitness. Experts say your goal should be
one, or a combination, of these:
- Moderate aerobic activity: brisk walking, for at least 2½ hours each week.
- Vigorous activities: running, for at least 1¼ hours a week.
Moderate physical activity is safe for most
people. It’s always a good idea to talk to your
doctor before becoming more active, especially
if you have health complications.