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Kamri Noel wants to know: How do fitness trackers tell how many steps you’ve taken? ➡ Subscribe for more National Geographic Kids videos: http://bit.ly/SubscribeToNatGeoKids ➡ Check out our playlist: http://bit.ly/WatchMoreHowThingsWork ➡ Visit our website: http://bit.ly/NGKidsHTW ➡ Check out Try This!: http://bit.ly/NGKTryThis About How Things Work: Kamri Noel does more than just Google how things work—she gets some of the world’s most knowledgeable experts from National Geographic to explain. Check out our other fun series!: Cool Science Experiments: http://bit.ly/NGKCoolScienceExperimentsPlaylist Try This!: http://bit.ly/WatchMoreTryThis More National Geographic Kids: Visit our website for more games, photos, and videos: http://bit.ly/NatGeoKidsSite Facebook: http://bit.ly/NGKFacebook Twitter: http://bit.ly/NGKTwitter About National Geographic Kids: Nat Geo Kids makes it fun to explore your world with weird, wild, and wacky videos! Videos featuring awesome animals, cool science, funny pets, and more, are made just for curious kids like you. So pick a topic you love and start watching today! Visit the National Geographic Kids website for more games, photos, and videos at http://natgeokids.com. Watch more National Geographic Kids videos at http://natgeokids.com/video How Fitness Trackers Work | How Things Work with Kamri Noel https://youtu.be/YOGeEcebQ3M National Geographic Kids https://www.youtube.com/NatGeoKids