Not just for big muscles

An exercise regimen that includes regularly lifting weights has a host of physical and mental-health benefits , particularly the older you get: Maintaining proper weight : Muscle is active tissue that consumes calories, while stored fat uses little energy; therefore, those with more muscle have a higher metabolic rate.

http://www.newsreview.com/chico/not-just-for-big-muscles/content?oid=10378136