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Il pisolino pomeridiano fa bene alla salute, a patto però che non superi i 40 minuti. A dirlo è uno studio dell'American College of Cardiology, secondo cui il riposino perfetto dura circa 20 minuti.
I ricercatori, studiando 300'000 persone in tutto il mondo, hanno visto che "in chi dorme più di 40 minuti nel pomeriggio c'è un aumento del rischio di colesterolo alto, pressione alta e aumento di massa grassa. In particolare, chi dorme oltre 90 minuti ha il 50% in più di possibilità di contrarre il diabete di tipo 2". Anche dormire troppo poco, però, "può essere dannoso e aumentare il rischio di sviluppare la sindrome metabolica".
La soluzione ideale, per gli esperti, è un riposino che duri meno di 40 minuti: "Con questa durata non sono emersi rischi, e in alcuni casi è emerso anche un miglioramento delle condizioni generali, specie nelle persone che dormivano meno di mezz'ora".
ansa/joe.p.
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