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With modern technology, there’s a near-infinite amount of minutia we can watch. We wait for patterns to emerge that can help us see ways to improve.
Example of variation of heart rate (15-min mean) due to sleep stage
Seasonal Correlation of Breathing Rate and Heart Rate Through the Night
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Heart Rate Variability And Sleep Amerisleep, 45% OFF
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Heart Rate Variability And Sleep Amerisleep, 45% OFF
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