The correct answer is: C 2hours
Explanation:
Scientists don’t know much about how or why you dream, but they do know how much time you spend doing it. For most people, it’s more than 2 hours each night. Dreams almost always happen during REM sleep. Most mammals and birds show signs of REM sleep. Reptiles and other cold-blooded animals don’t.
The correct answer is: • NREM sleep
The correct answer is: D Melatonin
The hormone most closely related to one's sleep pattern is melatonin.
The correct answer is: B Depression
Depression is the mental disorder most strongly linked to insomnia. Research has shown people affected by insomnia were five times more likely to develop depression than people without insomnia. Treating depression can often help sleep problems, and the opposite is also true – treating insomnia can help improve the symptoms of depression.
The correct answer is: B Women
Women are almost twice as likely to have insomnia. Hormonal changes during your menstrual cycle, pregnancy, and menopause are some causes. Hot flashes and night sweats can make it hard to sleep. Women are also more likely to have some health issues that cause insomnia, such as depression, fibromyalgia, and restless legs syndrome.
The correct answer is: B 90 to 120 minutes
Sleep typically occurs in cycles that range from 90 to 120 minutes in length, with 4 to 5 cycles occurring during each night's sleep.
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