Take the case of Jody Miller, an exercise physiologist who wanted to have a baby.

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Jessica Matthews, a personal trainer and exercise physiologist for the American Council on Exercise in San Diego, Calif.

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This is accomplished by using a wireless device (Fitbit) and a Withings scale (to measure your weight, track sleep, and activity) along with motivation from a registered dietician, an exercise physiologist, and behavioral coaching sessions via Skype.

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