Actor Kellan Lutz shares tips for using tech to stay fit

Actor Kellan Lutz talks with Wake Up with the CW via satellite about the app Lifesum.

Actor Kellan Lutz has been in movies like the Twilight series and "Expendables 3."

Since he's in action movies, he has to stay in shape. Kellan joined us via satellite Friday to talk about how he uses the Lifesum app to keep fit.

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