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/cdn.vox-cdn.com/uploads/chorus_asset/file/9116805/akrales_170823_1942_0020.jpg "Will Fitbit's sleep apnea tracking actually work? - The Verge")
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/GettyImages-609824874-5bf4b1c146e0fb002694d646.jpg "How Does Fitbit Track Sleep? Understanding the Sleep Stages Feature")
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