Aerobic exercise.If you are exercising with a view to general fitness then this is where you should start. Nearly everyone can do some kind of aerobic exercise. Aerobic exercise can be done at various intensity levels so no matter what physical condition you are in or what injury or illness you may have there is an aerobic exercise for you.
This is the type of activity where you exercise without getting out of breath. You perform continuous and rhythmic movements of the large muscles in the arms, legs & hips which gets your heart pumping and your lungs working but you are still able to breath in as much oxygen as your body needs.
Aerobic exercise is often lauded as the one that "burns fat". This is because after about 20 minutes of aerobic exercise the body begins to use it's stored fat as fuel. If you do it regularly your body's metabolism speeds up and you are able to use more calories, even when at rest.