Biceps can be nice. Yoga gives you poise. And a flatter stomach will help you get into that Christmas party outfit again. But aerobic exercise - the kind that really works out your heart, lungs and circulation - is unbeatable in the good it does your body.
"The benefits are almost endless," says Helen Luery, clinical exercise physiologist at University College London. "Regular aerobic exercise reduces the chances of having a heart attack or a stroke by as much as 30 per cent. It reduces the risk of developing some cancers. It gives you a greater feeling of well-being and helps you deal with stress. And if you are ill, it gives you greater longevity in disease and an increased ability to survive major surgery."

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