Swimming, running, biking, and brisk walking are all forms of O isokinetic exercise.
O anaerobic exercise.
isometric exercise.
O aerobic exercise.

aerobic exercise

Explanation:

Aerobic exercise is any activity that gets your blood pumping and large muscle groups working. It is also known as cardiovascular activity. Examples for aerobic exercises are brisk walking. swimming. running. cycling and more.

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you can pull a muscle   or fracture something