fitbit判断深度睡眠asleep和restless的原理
我的fitbit每天反馈出的深度睡眠时间一般是2个多小时，不超过3个半小时，rest?le?s?s时间都有近200分钟，让我很困惑它的判断标准是什么，到底是身体翻动，还是脉搏？没搞懂
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