I asked an expert if using a fitness watch could really help my sleep

One of the first things I do when I wake up is check my smartwatch to see how well I slept last night, and I know I’m not alone. Anyone with one of the best fitness trackers or smartwatches can probably relate.

Thanks to modern technology, I get to know how many sleep cycles I had, and when I was in deep sleep, light sleep, and REM (rapid eye movement) phases. I can see interruptions, such as when I got up to get water. However, what the heck do I do with all this information, and how can I use it to sleep better?

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