你是不是也有良好的睡眠品质？
Key indicators of good sleep quality from National Sleep Foundation (NSF)
- Sleeping more time while in bed (at least 85 percent of the total time)
- Falling asleep in 30 minutes or less
- Waking up no more than once per night; and
- Being awake for 20 minutes or less after initially falling asleep.
https://sleepfoundation.org/press-release/what-good-quality-sleep
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