Did you know that having a strong core by itself is not enough? Get-Fit Guy, Dr. Jonathan Su, shows you how to engage your core so you can protect your back during exercise and more strenuous activities in daily life.

Read the companion article on Quick and Dirty Tips.

If you want to learn more about how to strengthen and engage your core, check out Dr. Su's new book 6-Minute Core Strength by going to sixminutefitness.com.

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