Aerobic exercise comes in many forms, walking is the easiest, but not the only one. I also recommend swimming, bicycling or any non-impact sport. Whether you walk outside, or on a treadmill, enjoy elliptical training or other exercises, the most important emphasis should be if you enjoy that activity. If you enjoy it, you will be consistent and the better the benefit for your body. Feel comfortable to try different exercises, mix your routine when it becomes boring and seek the advice of a trainer to be safe. Avoid sports that demand bending, pivoting or lifting, as this stresses our spine, obviously contact sports are not recommended. Find your exercise that is age appropriate, be consistent and enjoy yourself. The purpose of exercise is to promote blood flow to all your body, strengthen your lungs and heart, nourish and move your joints and to stimulate your muscles. Be careful not to overdo a good thing, if you feel pain after exercise, cut back on the intensity and duration.

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