Toning down a jumpy sympathetic nervous system will encourage a balanced sleep/wake cycle in perimenopausal women.

缓和跳跃的交感神经系统将促进更年期妇女睡眠/唤醒周期的平衡。

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This could be due to the effects of our natural sleep-wake cycle, or circadian rhythm, the researchers suggest.

研究者表明，这是由于我们的自然睡眠-觉醒周期或者昼夜节律的影响。

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Get active outdoors between 6:30 and 8:30 a.m.; it's the prime window to wake your body with sunlight, kicking off a healthy sleep-wake cycle.

早上6：30——8：30进行活跃的户外运动；这是通过阳光唤醒你身体，开启健康的醒睡周期的主要窗口。

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Impairment in the body's internal clock, ultimately disrupting a person's sleep-wake cycle, is just one of the potential symptoms of dementia.

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Melatonin products are usually synthetic versions of the hormone made naturally by the pineal gland, in the brain, which helps regulate the body's sleep-wake cycle.

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Sharing a bed may also reduce cytokines, involved in inflammation, and boost oxytocin, the so-called love hormone that is known to ease anxiety and is produced in the same part of the brain responsible for the sleep-wake cycle.

WSJ: Who Sleeps Better at Night?