Aerobic activity is also called endurance activity or cardio activity.
During aerobic activity, your body’s large muscles move in a rhythmic manner for a sustained period of time. Aerobic activities cause your heart to beat faster than usual to meet the demands of your body’s movement. Aerobic activities also require your body to use more oxygen. Over time, regular aerobic activity makes your heart and cardiovascular system stronger and fitter.
Aerobic physical activity has three components:
1. Intensity - or how hard you work to do the activity:
- Moderate intensity - As a rule of thumb, a person doing moderate intensity aerobic activity may make you breathe harder and make it more difficult to talk, but you should still be able to carry on a conversation. If you are just beginning, slowly work up to moving at a moderate intensity pace. Some examples:
Walking briskly (3 miles per hour or faster, but not race-walking)
Water aerobics
Bicycling slower than 10 miles per hour
Tennis (doubles)
Ballroom dancing
General gardening
- Vigorous intensity - As a rule of thumb, a person doing vigorous intensity activity cannot say more than a few words without pausing for a breath. Some examples:
Racewalking, jogging, or running
Swimming laps
Tennis (singles)
Aerobic dancing
Bicycling 10 miles per hour or faster
Jumping rope
Heavy gardening (continuous digging or hoeing, with heart rate increases)
Hiking uphill or with a heavy backpack
Rock climbing
Training to run a 10K for charity
2. Frequency - or how often you do an aerobic activity.
3. Duration - or how long you do an activity in any one session.
Although these components make up a physical activity profile, it is shown that the total amount of physical activity (for example, minutes of moderate intensity physical activity) is more important for achieving health benefits than is any one component, such as frequency, intensity, or duration.
Experts recommend at least 150 minutes (2 hours and 30 minutes) of moderate intensity physical activity, or 75 minutes (1 hour and 15 minutes) of vigorous intensity aerobic physical activity per week, preferably spread throughout the week. You don’t need to do all of your exercise at once to be physically active. 3 days a week produces health benefits, and may help to reduce the risk of injury and avoid excessive fatigue. You may break up your activity into shorter segments of 10 minutes or more. Episodes of this duration are known to improve cardiovascular fitness and some risk factors for heart disease and type 2 diabetes. Moderate intensity or vigorous intensity physical activities that last for at least 10 minutes count toward meeting the weekly recommendation.
Adults can do either moderate intensity or vigorous intensity aerobic activities, or a combination of both. It takes less time to get the same benefit from vigorous intensity activities as from moderate intensity activities. A general rule of thumb is that 2 minutes of moderate intensity activity counts the same as 1 minute of vigorous intensity activity. For example, 30 minutes of moderate intensity activity a week is roughly the same as 15 minutes of vigorous intensity activity.
If you want to lose weight, you may need to do more than 150 minutes of moderate-intensity aerobic activity per week. Remember that you can be active in several shorter sessions, and that your daily activities count toward calories used.