But, increasingly, scientists are finding that a little weight training - and regular exercise - can help prevent some disabilities associated with age.

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Anaerobic exercise (weight or strength training) helps form bone density and builds muscle that more efficiently burns calories.

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This type of training can also help prevent weight loss plateaus, which often occur during weight loss accompanied by exercise because the fitter or trimmer that you are, the fewer calories you burn doing the same workout.

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Strength training also has positive benefits on bone maintenance and stability that eclipse the potential benefits of aerobic weight-bearing exercise.

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This should include vigorous (jogging) and moderate aerobic exercise (a brisk walk), as well as twice-weekly activities, such as weight training, which maintain or increase muscular strength and endurance.

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