Research published in the Journal "Heart" found adults who take daytime naps once or twice a week had a lower risk of heart problems.
That included heart disease and strokes.
Inadequate sleep is often linked to those problems, so naps can make up for lost nighttime sleep.
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No association was found between more frequent naps or duration of the nap.
Naps can also help relieve stress, which protects the heart.
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