De acordo com o terceiro parágrafo, o relógio cerebral
que regula o ciclo de sono e de vigília pode ficar alterado
devido
Question: Is there anything I can do to train
my body to need less sleep?
Karen Weintraub
June 17, 2016
Many people think they can teach themselves
to need less sleep, but they’re wrong, said Dr. Sigrid
Veasey, a professor at the Center for Sleep and Circadian
Neurobiology at the University of Pennsylvania’s
Perelman School of Medicine. We might feel that we’re
getting by fine on less sleep, but we’re deluding ourselves,
Dr. Veasey said, largely because lack of sleep skews our
self-awareness. “The more you deprive yourself of sleep
over long periods of time, the less accurate you are of
judging your own sleep perception,” she said.
Multiple studies have shown that people don’t
functionally adapt to less sleep than their bodies need.
There is a range of normal sleep times, with most healthy
adults naturally needing seven to nine hours of sleep per
night, according to the National Sleep Foundation. Those
over 65 need about seven to eight hours, on average,
while teenagers need eight to 10 hours, and school-age
children nine to 11 hours. People’s performance continues
to be poor while they are sleep deprived, Dr. Veasey said.
Health issues like pain, sleep apnea or autoimmune
disease can increase people’s need for sleep, said Andrea
Meredith, a neuroscientist at the University of Maryland
School of Medicine. A misalignment of the clock that
governs our sleep-wake cycle can also drive up the need
for sleep, Dr. Meredith said. The brain’s clock can get
misaligned by being stimulated at the wrong time of day,
she said, such as from caffeine in the afternoon or evening,
digital screen use too close to bedtime, or even exercise
at a time of day when the body wants to be winding down.
(http://well.blogs.nytimes.com. Adaptado.)
Question: Is there anything I can do to train my body to need less sleep?
Karen Weintraub
June 17, 2016
Many people think they can teach themselves to need less sleep, but they’re wrong, said Dr. Sigrid Veasey, a professor at the Center for Sleep and Circadian Neurobiology at the University of Pennsylvania’s Perelman School of Medicine. We might feel that we’re getting by fine on less sleep, but we’re deluding ourselves, Dr. Veasey said, largely because lack of sleep skews our self-awareness. “The more you deprive yourself of sleep over long periods of time, the less accurate you are of judging your own sleep perception,” she said.
Multiple studies have shown that people don’t functionally adapt to less sleep than their bodies need. There is a range of normal sleep times, with most healthy adults naturally needing seven to nine hours of sleep per night, according to the National Sleep Foundation. Those over 65 need about seven to eight hours, on average, while teenagers need eight to 10 hours, and school-age children nine to 11 hours. People’s performance continues to be poor while they are sleep deprived, Dr. Veasey said.
Health issues like pain, sleep apnea or autoimmune disease can increase people’s need for sleep, said Andrea Meredith, a neuroscientist at the University of Maryland School of Medicine. A misalignment of the clock that governs our sleep-wake cycle can also drive up the need for sleep, Dr. Meredith said. The brain’s clock can get misaligned by being stimulated at the wrong time of day, she said, such as from caffeine in the afternoon or evening, digital screen use too close to bedtime, or even exercise at a time of day when the body wants to be winding down.
(http://well.blogs.nytimes.com. Adaptado.)
Gabarito comentado
Da leitura do terceiro parágrafo depreende-se: i) problemas de saúde como dor, apneia do sono ou doenças autoimunes podem aumentar a necessidade de sono das pessoas; ii) o desalinhamento do relógio que rege nosso ciclo sono-vigília também pode aumentar a necessidade de sono; iii) tal relógio do cérebro pode ficar desalinhado ao ser estimulado na hora errada do dia; iv) são exemplos de estímulos que desalinham tal relógio: cafeína à tarde ou à noite, o uso da tela digital perto da hora de dormir ou até o exercício na hora em que o corpo deseja descanso.
Deve-se escolher a alternativa VERDADEIRA.
Alternativa A
FALSO. O que desalinha tal relógio é o uso de tela perto da hora de dormir. Não se trata do barulho mas do estímulo luminoso.
Alternativa B.
FALSO. Algumas doenças, de fato, demandam maior descanso. Isso acontece por causa da doença em si. O desalinhamento do nosso relógio que regula o ciclo sono-vigília é outro fator que se adiciona às patologias na demanda de mais horas de sono. (Observe o uso de “also").
Alternativa C
FALSO. O excesso de ingestão de cafeína só afeta tal relógio nos períodos da tarde e da noite.
Alternativa D
VERDADEIRA. A Dra. Meredith afirma que o relógio do cérebro pode ficar desalinhado ao ser estimulado na hora errada do dia.
Alternativa E.
FALSO. Pelo contrário, exercícios físicos próximos a hora de dormir desalinham o relógio do cérebro.
RESPOSTA: D
