Aerobic exercise
Aerobic exercise involves repeated movement of large muscle groups over a period of time. It increases breathing and heart rate to meet the body’s activity demands.
In everyday words
Brisk walking, cycling, and swimming can be aerobic activities. How hard an activity feels depends on both the activity and the person doing it.
What to keep in mind
Aerobic describes a type of activity, not a requirement to work at maximum effort. Choose an appropriate starting level and build gradually, taking account of any individual advice.