Strength: Lifting weights can help build muscle strength so you can get up from a chair by yourself or pick up your grandchildren.

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In the study, Dr Lomax used an inspiratory muscle training device which works in a similar way to other resistance training devices to build muscle strength.

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Its clear that strength training using weight machines, free weights or resistance bands can help build and preserve muscle mass and strength.

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Anabolic steroids work on horses as they do on humans -- helping to build strength and muscle.

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To answer your question, I turned to someone who helps people build muscle every day, Mark Lovat, the strength and conditioning coordinator for the Green Bay Packers of the National Football League.

CNN: Should I always lift to muscle failure when weight training?