(1). 根据后句when you fall asleep, you go through the four stages of the sleep cycle.当你睡着时,你会经历四个阶段的睡眠周期,可知前句讲的是睡眠工作, 因此B项"你曾经想知道睡眠到底如何工作的吗?"符合句意,故选B. (2). 根据后句you won't wake up easily. The slow eye movements continue ...
A. This is when your sleep becomes a bit deeper. B. Have you ever wondered how exactly sleep works? C. A complete sleep cycle lasts between 90 and 110 minutes. D. During the REM stage, your eyes move quickly beneath your closed eyelids. E. Although you are sleeping deeply, this is ...
There are four stages of sleep that the body experiences in cycles throughout the night.身体整个晚上会经历四个阶段的睡眠周期。On a good night, we cycle through these stages four or five times.正常的夜晚，我们会循环这些阶段四至五次。Stages one and two are light sleep.第一和第二阶段为浅眠期...
Some nights are full of tossing and turning, leaving you extra tired and in dire need of a jolt of caffeine in the morning. But why? One reason might be your sleep cycle—or, rather, the disruption of it. If you experience disrupted sleep patterns or don’t spend enough time in the ...
(a) What are sleep cycles? (b) How many cycles occur throughout the night?Sleep:Sleep is a state of consciousness that is altered from waking consciousness to a reduced perception of sensory information, reduction of muscle tension, and loss of voluntary muscle movement. The sl...
What Are the Different Sleep Cycle Stages? If you have ever wondered – what is the best sleep stage? The answer is, they are all critical. There are a total of five sleep stages that give us a complete sleep cycle. Four of those cycles are non-REM (1, 2, 3 and 4), and then ...
Chronobiologists (时间生物学家) are interested in what is known as the circadian (生理节奏的) rhythm. This is the complete cycle our bodies are naturally made to undergo within the passage of a twenty-four-hour day. Aside from sleeping at night and waking during the day, each cycle involve...
The Four Stages of the Sleep Cycle The two phases of sleep are broken down into four cycles. The first three cycles take place in non-REM, and the last stage happens during REM sleep. During these stages, a person’s body goes through multiple physiological changes that are vital for phys...
a) toddlers are attracted to shapes that resemble the human body b) toddlers are more active than at any other time in their lives, or, c) toddlers can grow up to three centimetres during sleep time a)幼儿喜欢与人体相似的形状,b)幼儿比他们生命中的任何其他时间都更活跃,c)幼儿在睡眠时间可以...
sleep than when we are awake. Sleep is an incredibly complex process, and if we could recognize what the brain is doing while we sleep, all that's left is awe. Furthermore ,we need to know why people need to sleep. Sleep is one of the ba...