Why We Sleep- The Pending Mystery - 731 Words

In recent years, a lot of progress has been made into the field of sleep research. However, these discoveries are still far from being complete. Considering that an individual spends about one-third of their life sleeping, there is much more that still needs to be discovered concerning this topic. General Information Sleep is basically a state of physical inactivity and mental rest in which conscious awareness, thoughts, and voluntary movements do not occur. During sleep, irregular and unpredictable dreaming also takes place. Sleep is a very active and coordinated process in which the brain busily turns off or moderates wakeful functions while actively turning on sleep mechanisms. There are two stages that sleep is usually divided into. The first stage is the non-rapid eye movement, or NREM stage. The second stage is the rapid eye movement, or REM stage. NREM is the stage of sleep that occurs when one first starts their sleep cycle and it is said to make up 75% of the sleep cycle. One of the distinguishing features of NREM sleep is its lack of dreaming. During the last two stages of the four stage NREM sleep, the deepest and most restorative sleep occurs, followed by various important biological processes. Meanwhile, the REM stage of sleep first occurs approximately 90 minutes after falling slee p and increases over the later part of the night, while occupying only 25% of the sleep cycle. The REM sleep is the stage of sleep that is characterized mainly by the appearance ofShow MoreRelatedThomas Hardy Poems2405 Words   |  10 Pagesin, that a Powerfuller than I Had willed and meted me the tears I shed. But not so. How arrives it joy lies slain, And why unblooms the best hope ever sown? --Crass Casualty obstructs the sun and rain, And dicing Time for gladness casts a moan.... These purblind Doomsters had as readily strown Blisses about my pilgrimage as pain. | | | NEUTRAL TONES (1867) | |    | WE stood by a pond that winter day, And the sun was white, as though chidden of God, And a few leaves lay on the starving sodRead MoreI Was The Biggest Life Decision1974 Words   |  8 Pagesmom returned, we used to have dinner while watching tv and then used to sleep. This was our daily routine. Pretty boring right.:(( And since my dad left, we didn’t do anything special during the week-ends. This made it more fun! We used to always call him when our time permitted but that was never enough. From late November, however, our story began to change. As usual, my mom used to talk to him, but now, she would lock her door and talk for hours. This turned into a big mystery for me. I keptRead MoreThomas Hardy Poems16083 Words   |  65 Pageshate s profiting! 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