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nwitimes.com
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Fitness trackers are hot, but do they really help?nwitimes.comFitness expert Harley Pasternak, left, and actress Jordana Brewster lead a workout Thursday on behalf of Fitbit in front of the New York Stock Exchange. Fitbit flexed some muscle Thursday and its shares rocketed 50 percent higher in the first day of ...Fitness trackers all the rage, but do they help?Boston GlobeHow we discovered the dark side of wearable fitness trackersThe Conversation UKtất cả 49 bài viết »