大约50%的美国人和40%的英国人使用设备监测睡眠，旨在达到一项针对50万人的研究中所确定的6.4至7.8小时的最佳睡眠时间。虽然与多导睡眠图相比，大多数追踪器在区分睡眠与清醒状态方面的准确率高达95%，但它们在分类特定睡眠阶段方面的准确率仅为50%至80%。

尽管存在这些局限性，睡眠追踪器仍能促进更健康的行为，55%的用户报告称根据追踪器数据改变了他们的作息习惯。然而，过多的数据也会引发对睡眠质量的焦虑，在一种被称为“正性失眠症”的现象中影响了高达30%的用户。

最终，专家指出，判断睡眠质量好坏的最佳指标仍然是人醒来时的清爽感，而不是完全依赖追踪器的指标。因此，个人应当避免因为可能并不完美的数据而失去睡眠。

Approximately 50% of Americans and 40% of Britons use devices to track sleep, aiming to reach the optimal duration of 6.4 to 7.8 hours identified by a study of 500,000 people. Although most trackers are 95% accurate at distinguishing sleep from wakefulness compared to polysomnography, they are only 50-80% accurate at classifying specific sleep stages.

Despite these limitations, sleep trackers can encourage healthier behaviors, with 55% of users reporting changes in their routines based on tracker data. However, the abundance of data can cause anxiety about sleep quality, affecting up to 30% of users in a phenomenon known as orthosomnia.

Ultimately, specialists suggest that the best indicator of a good night's rest remains how refreshed a person feels upon waking, rather than relying solely on tracker metrics. Therefore, individuals should avoid losing sleep over potentially imperfect data.

Source: Should you use a sleep tracker?

Subtitle: They are pretty accurate. But they could keep you up at night

Dateline: June 4th 2026