Por que algumas pessoas dormem pouco e acordam cheias de energia?

Insônia atinge milhões de brasileiros, mas há quem precise de bem menos horas de sono para viver bem.

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O chamado sono naturalmente curto ocorre por mutações em genes como DEC2, ADRB1 e NPSR1.

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Quem tem essa condição fica bem com 4 a 6 horas de sono por noite — e sem os prejuízos da privação.

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Pesquisas mostram que essas pessoas dormem de forma mais eficiente e têm energia, memória e humor preservados.

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Estudar o sono curto pode ajudar no tratamento da insônia e em doenças ligadas ao descanso, como Alzheimer.

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