Take Two®

News and culture through the lens of Southern California. Hosted by A Martínez

Fitness trackers track daily habits, heart rate, sleep patterns...but what good is all that data?

by Take Two®

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LAS VEGAS, NV - JANUARY 04: InBody displays the first wearable fitness tracker and body composition analyzer during a press event at the Mandalay Bay Convention Center for the 2015 International CES on January 4, 2015 in Las Vegas, Nevada. In addition to sleep tracking and heart rate measurements, the unit measures body fat percentage, total muscle mass, body fat mass and basal metabolic rate (BMR). CES, the world's largest annual consumer technology trade show, runs from January 6-9 and is expected to feature 3,600 exhibitors showing off their latest products and services to about 150,000 attendees. (Photo by Ethan Miller/Getty Images) Ethan Miller/Getty Images

Gadgets galore are being shown this year at the annual Consumer Electronics Show in Las Vegas. Among them, many wearable fitness trackers -- wristbands that track the steps you take in a day, your sleep patterns, your heart rate, even your blood oxygen levels.

It's a huge industry at this point. There's the FitBit, the UP band, the Garmin, the Razer Nabu, and dozens more, and the industry has topped $1 billion dollars. 

Of course, being able to gauge aspects of your physical health without entering a doctor's office is appealing. Sure, having your personal statistics conveniently sent to your phone can help you better monitor your physical well-being. And you can easily share your stats with friends and compare how many steps you took that day or how much sleep you got -- now that's motivation for self-improvement! 

But there are still some unanswered questions about these gadgets. What happens to all that personal data being collected? Who owns it? And how accurate is it anyway?

David Pogue is the founder of Yahoo Tech, a monthly columnist for Scientific American and the host of science shows on PBS’s “NOVA.”  He posed some of these questions in Scientific American recently and he joined Take Two to discuss this with our resident FitBit fanatic, host Alex Cohen.

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