Abstract
In modern society, people often have difficulty in sleeping because of various reasons including psychological or physiological factors, environment, life rhythm and diet. This paper illustrates this effect by integrating various surveys. According to clinical trials, insomniacs normally share common characteristics such as poor sleep habits. In this essay, the main structure of sleep will be first introduced in detail, namely NREM and REM. Then it will discuss certain elements that affect sleep patterns, together with proper improvement methods. While these statistics are based on the majority of people, they don't necessarily apply to everyone. If the phenomenon that the sleep quality is poor exists for a long time, it is advisable to seek medical assistance. Additionally, the importance of both the number of awakenings and the quality of breathing in assessing sleep quality together with some reasonable advice will be put after description of sleep process.
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