Our biological clocks make us feel most sleepy from?
A. 9pm-5am
B. 6pm-6am
C. 10pm-4am
D. 12am-7am
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To determine the correct answer, you need to understand the concept of circadian rhythms and the natural sleep-wake cycle of humans.
Circadian rhythms are biological processes that follow a 24-hour cycle and regulate various physiological and behavioral functions, including sleep. The sleep-wake cycle, also known as the circadian sleep pattern, is influenced by these internal biological clocks.
Most people have a sleep-wake cycle that aligns with the natural light-dark cycle of the day. Generally, people tend to feel most sleepy during the night, particularly in the hours when it is dark.
Looking at the options, the periods from 9pm-5am and 10pm-4am fall in the night hours when it is typically dark outside. However, the period from 12am-7am has a narrower range and specifically includes the early morning hours when people generally experience deep sleep.
Therefore, the most accurate answer would be:
D. 12am-7am