Why does my step count differ depending on
where the device is worn?
With wrist-based devices, if you move your body a lot and not your arms (or vice versa), you
may see a slight difference in step count than you would see if wearing a clip-based device on
your torso.
If you have your Flex 2 in a loose-fitting accessory such as a bangle or pendant, you can expect
greater variation in your stats. During workouts we recommend wearing the classic elastomer
band and ensuring that it fits securely but isn't too tight. For more tips see How do I wear my
device?
Why do I get extra steps sometimes?
Fitbit devices have a finely tuned algorithm for step counting. The algorithm is designed to look
for intensity and motion patterns that are most indicative of people walking and running. When
working at a desk, cooking, or doing other arm movements, a device on your wrist can pick up
some extra steps if it thinks you're walking. Many of these situations—such as working or
cooking—do include a few steps in-between stationary periods so the device tries to give you
credit for those steps. For the vast majority of customers, the amount of stray steps accumulated
is negligible when compared to the entire day. For a more technical explanation, see How does
my Fitbit device count steps?
Why do I get steps when I'm riding a bike?
On bumpy trails it's possible that your device will register steps but these should be negligible in
your overall stats. If you have a device with multisport mode, make sure you choose the Bike
exercise before starting your workout. If you're relying on SmartTrack to automatically detect
your bike ride, make sure the Outdoor Bike exercise is on. (In the app, tap the exercise title and
then tap the gear icon in the top right.) If your device doesn't offer multisport mode or
SmartTrack, we recommend logging your bike ride manually to get the best calorie burn
estimation. For more information see How do I track my exercise and activities with Fitbit?
Why do I get extra floors sometimes?
If your device measures floors, it detects floors using an altimeter, which is a sensor that
calculates altitude based on atmospheric pressure. Though your device is designed to look for
pressure changes based on elevation gains, pressure changes due to other causes—such as a gust
of wind, a weather change, or opening a door—can occasionally cause your device to register an
extra floor or two. Another factor is floor height. Your device registers one floor when you’ve
gone up about ten feet, which is the average between residential and commercial floor heights. If
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