Heart beat: As the hammock swings
Heart beat
The topic of napping and heart disease is anything but a relaxing one for researchers. Some studies have shown that nappers are more likely to have heart trouble or die prematurely from it. This could be because the researchers didn't account for existing heart disease, which can interfere with nighttime sleep and cause daytime sleepiness, and thus the need for naps. It is also possible that waking up after a siesta opens a small window of heightened heart attack risk, much like waking up in the morning does.
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