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BodyMedia CORE Weight Management System

3.4 out of 5 stars 167 customer reviews
| 35 answered questions
About the Product
  • Track your activity and calorie burn like the contestants on The Biggest Loser and endorsed by health and wellness expert Jillian Michaels
  • The BodyMedia system automatically tracks your calories around the clock helping you to lose weight and even improve your weight loss by 3X proven in group trials
  • Provides most accurate calorie burn measurement in market (data available on
  • Compatible with BodyMedia Display device
  • Works with MyFitnessPal, Runkeeper, Sparkpeople and more

Frequently Bought Together

  • BodyMedia CORE Weight Management System
  • +
  • Bodymedia FIT Weight Management Display
  • +
  • MyoTape Body Tape Measure
Total price: $134.94
Buy the selected items together

Product Description

Product Description

The bodymedia fit core armband, small in stature but big in building a healthier lifestyle, is an enlightening fitness device. it gives you the tools to take off the pounds and get to the core of the issue when it comes to your fitness and weight loss plan. capturing over 5000 data points per minute using four sophisticated sensors, this seriously smart device tracks everything from calories burned, steps taken and levels of physical activity to sleep. bodymedia fit armbands give you the most accurate calorie burn in the market, and the technology used in the bodymedia system has been clinically proven to improve weight loss. you burn calories differently than anyone else, which is why cookie-cutter weight loss programs may not be working for you. the bodymedia fit system captures your individual metabolic profile. this personalized info helps you pinpoint what actions you need to take to reach your weight loss goals.

From the Manufacturer

Are you looking for that added edge in your weight loss program? Track your activity and calorie burn like the contestants on The Biggest Loser.

At a Glance:
  • As seen on NBC's The Biggest Loser
  • Wear the BodyMedia FIT Armband to measure calories burned, steps taken, activity levels and sleep quality
  • Log food using the online tool or mobile app
  • Import nutritional data from apps such as MyFitnessPal
  • Receive personalized feedback via the BodyMedia FIT coach
  • Upload your data to the online Activity Manager by connecting the device to your computer using the provided USB cable (subscription required after 3-month trial***)
BodyMedia CORE Armband - RidingBodyMedia CORE Armband - ReadingBodyMedia CORE Armband - Running

The BodyMedia CORE Armband captures 5,000+ data points per minute, automatically tracking calories burned during your daily activities.

BodyMedia CORE Armband

The BodyMedia CORE Armband is the most accurate device in the market for measuring calorie burn*. No other consumer body monitoring device can capture calorie burn with greater than 90 percent accuracy, a fact that has been clinically validated when compared to the gold standard in calorie measurement**. The BodyMedia FIT Armband automatically and accurately gives you round the clock info on calories burned, activity levels, steps taken and sleep quality. The CORE Armband displays your data on your computer after connecting it with a USB cord and can also be used in conjunction with the BodyMedia FIT Display device.

BodyMedia's technology is also featured on The Biggest Loser in Season 14, which features one of America's toughest trainer, Jillian Michaels. All contestants are wearing BodyMedia FIT Armbands to provide them with detailed and accurate information to help achieve their weight loss goals.

*Data on file.
**British Journal of Sports Medicine, July 2010.
***Subscription required. The CORE Armband does not display information on its own, but rather works in conjunction with the online Activity Manager. Package includes a free 3-month trial period subscription.

Accuracy is on the Arm

When you wear a BodyMedia FIT Armband directly on your arm, it monitors calories burned, exercise intensity, steps taken and sleep quality. Other devices clip to your shirt or belt loop so they can only record simple data (steps) from when you move. Why is that important? BodyMedia FIT Armbands recognize that jogging up 3 flights of stairs is not the same as walking down 3 flights of stairs. You're doing more work and burning more calories jogging up those stairs.

If you want to accurately monitor what's going on inside your body, you need a system that is in touch with you day and night. That's why BodyMedia FIT Armbands are worn directly on your arm. Its patented sensors detect skin temperature, sweat, the rate of heat leaving your body and motion. It knows what you're doing, when you're doing it and even the intensity of your effort. 

Online Activity Manager

Our online Activity Manager allows you to upload data to our server through your computer. The software analyzes the data and presents the information in an easy-to-understand format so your progress can be tracked. The online Activity Manager allows you to enter body metrics (height, weight, age, gender), log food, gives you feedback, and guides you to their goals with a running report on the progress you've made--all while tracking your personal bests.

Look for BodyMedia on The Biggest Loser

The online Activity Manager allows you to upload LINK Armband data to our server through your computer. View larger.

FIT coach

The Activity Manager also features FIT coach. The software analyzes the millions of data points gathered from your Armband and you are given individual feedback suggestions such as eating something different, adjusting activity levels or focusing on getting more sleep. All of the feedback you receive is based on your actual data.

BodyMedia FIT App

After syncing the CORE Armband through the computer, you can see your latest synced data through the free BodyMedia smartphone app. Additionally, you can log your foods using the app.

Apps that work with the Armband
  • Withings - Never log your weight manually again by connecting your Withings Scale account to your BodyMedia Activity Manager to have your weight entries sent automatically.
  • MyFitnessPal - Database of 2 million foods to make logging meals a snap. MyFitnessPal also offers a free barcode scanner and an online community to diet with your friends.
  • Runkeeper - Turns your smartphone into a personal trainer in your pocket.
What's in the Box

BodyMedia CORE Armband, medium size strap, USB cable, manual and quick start guide.

Product Details

  • Product Dimensions: 1 x 3 x 2 inches ; 4 ounces
  • Shipping Weight: 7.2 ounces (View shipping rates and policies)
  • Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B0052KONSI
  • UPC: 898363002225
  • Item model number: 100776
  • Average Customer Review: 3.4 out of 5 stars  See all reviews (167 customer reviews)
  • Amazon Best Sellers Rank: #184,000 in Health & Personal Care (See Top 100 in Health & Personal Care)
  • Product Warranty: For warranty information about this product, please click here

Important Information

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Actual product packaging and materials may contain more and different information than what is shown on our website. We recommend that you do not rely solely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. Please see our full disclaimer below.

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Vine Customer Review of Free Product ( What's this? )
The BodyMedia Fit Core armband is a product that elicits mixed feelings in me. I have used the device daily for 3 weeks, alongside a Fitbit Ultra activity monitor. I don't think it is necessary to have 2 competitive products side-by-side to do a useful review, but these 2 products side-by-side brought the products' differences into sharp focus as I used both. At a very minimum, a reviewer should actually use a product before reviewing it.

In terms of accuracy, I believe both products have advantages. The BodyMedia Core armband, in my opinion, seems to provide more accurate data on calorie burn, because it is using galvanic skin response and temperature data to calculate it. On the other hand, Fitbit Ultra was usually very close in its calorie calculations that are based on activity level (as measured by accelerometer) and duration. I believe both products accurately measure steps (both are accelerometer based). Sleep data was also pretty similar between the 2 devices. Fitbit Ultra also measures floors via its built-in altimeter, which the Core armband does not. Advantage to Fitbit there. I like the wireless syncing of the Fitbit vs. the cable hookup of the Core armband. Advantage to Fitbit there too.

Here are some specific hits and misses with the Core armband:


Small and reasonably unobtrusive: The medium-size armband was just small enough for me (I'm small-framed and about 120 lbs). I kept the device on for the recommended 23 hours per day. Most short sleeved shirts covered the armband, unless I was stretching or the shirt had very short sleeves. The profile of the device is quite narrow, so it doesn't bulge beneath sleeves noticeably.
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Verified Purchase
Before I bought this product, I read all the reviews on Amazon and had a few concerns. I bought it anyway and have been nothing but happy. My concerns were as follows:
1) There were some lousy reviews about customer service. I have had no problems whatsoever. I have addressed a question to customer service twice and received timely responses and effective fixes both times. I think it's possible that they took the feedback to heart and have improved.
2) There was at least one review that criticized the velcro on the strap; the instructions are very specific that you should use the velcro to set the initial size but, from then on, just use the elastic to pull it down your arm and off. It works, it's reasonable, and there is no wear and tear on the velcro.
3) There were some comments about accuracy; honestly, these mostly made me laugh. Yes, the Bodymedia product shows that I burn fewer calories on the elliptical than the elliptical says. It's not the Bodymedia device that is incorrect; those machines are notoriously incorrect and there has been no testing on them. There is no doubt in my mind which one to believe.

My observations:
1) Wearing the armband has given me a much better idea of what activities burn more calories--it's not always what you think. I had been choosing the elliptical over an exercise DVD I have based on my perceived calorie burn (and not losing weight when I thought I should). Now, I know that the DVD gives me a much more effective workout and the weight is coming off.
2) It is motivational. I like to see the numbers go up. I like to beat my personal best. Maybe I should take the stairs. Maybe I'll get up from my desk once and hour and walk around the office.
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I find the marketing for the Bodymedia or "Bodybugg" to be pretty horrible because they don't really tell you the difference. I was a fitness and weight loss coach a few years ago when I first got one though and was well aware of the difference.

I just recently updated my device to the Bodymedia Core (check their site too because they have specials like a free display sometimes) and I see the marketing still doesn't explain the difference so I thought I would.

Having recently gotten my new Bodymedia I thought I'd first touch on the difference between the Core (the new Bodymedia) and their old bands--way smaller, shaped better to fit the arm, now in grey rather than black, lighter.

Okay so then what's the difference between this and the fitbit or jawbone?

This is the most accurate way to measure calories burned outside of a hyperbolic chamber. A Fitbit and Jawbone are basically a pedometer and guesstimate. This is why the Bodymedia bands are what you see on the arms of the Biggest Loser contestants--only way to get a real read.

Why? Here is how they measure your caloric burn:

Bodymedia AKA Bodybugg: Determines caloric burn via 5 measurements:
1) accelerometer, 2) heat flux, 3) galvanic skin response, 4) skin temperature, 5) near body temperature. When comparing calorie expenditure measurements from the armband device to calorie expenditure measurements in a metabolic chamber (the "gold standard" of calorie expenditure measurement), the bodybugg or Bodymedia armband achieved average accuracy rates of 92%.

Fitbit and Jawbone determines caloric burn via number of steps you take and an altameter meaning seeing if you go up or down stairs. That's it. It's a pedometer.
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