Here's good news for geezers — or for merely middle-aged folks — who'd like to stay fit and independent far into their later years.
You don't have to lift heavy weights to build muscle strength. Lifting lighter weights can be just as effective if you do it right, and you're much less likely to hurt yourself, researchers say.
That's important information for people exercise expert Stuart Phillips calls "mere mortals" — those with dwindling muscle mass who want stay active, as distinct from body-builders and elite athletes.
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