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Story Updated: Jun 6, 2012

heavier weights. Does one work better than the other for building muscle?

To get bigger muscles, you may not have to lift bigger weights!

Experts recommend that we spend time each week doing strength-building exercises.

Many have suggested that if you want muscle growth, you need to lift heavy.

But a paper in the new issue of finds that may not be true.

Researchers tested several variables to see what worked best for bulking up.

Option one -- taking a heavy weight and lifting it a few times.

Or option two -- using a lighter weight and doing more repetitions.

The results: lifting more reps of lighter weights worked just as well for creating new muscle protein.

This approach does require that you do enough reps so the last two or three feel very difficult.

A sports-medicine doctor or qualified personal trainer may be able to help you come up with a workout plan that's right for you.

I'm Dr. Cindy Haines of HealthDay TV, with the news that doctors are reading; health news that matters to you.

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