In The first Manuscript, you will find:
Negative thoughts greatly impact our abilities and motivation. A positive thinking person will wake in the morning and feel the normal aches and pains. They will get out of bed and think, "I'd better get moving so I'll feel stronger and work the kinks out of my muscles." The negative thinking person will think, "I feel so bad and hurt so much I think I'll stay in bed." Their motivation and functionality are now impacted so that if they do get out of bed, they will feel the pain all day long. They will do less and complain more, further crippling their immune system from functioning properly.
In The Second Manuscript, you will find:
Sleeping is a normal and essential part of our lives. It takes up about 30% of our lives, which means that if you live to be 90 years old, you'll spend 32 of those years sleeping Yet, it's not clear why we need to sleep nor what's going on in our brain while we do. There are plenty of theories, but nobody knows for sure.
If you think about it, it's certainly quite odd. While you sleep, you're not doing anything, at least so it seems. Your body is paralyzed, you're not conscious, and you're totally vulnerable. Yet, there must be something behind it all that's worth that risk.
Pondering the nature of sleep has been going on since the dawn of the human species. However, the general attitude towards sleeping changed throughout the course of history. From a natural cure, sleep somehow unjustly turned into a waste of time for many people. Ever since Edison invented the lightbulb, people have started staying up later. Where before they went to bed with the setting of the sun, now they stay awake long into the night so they can do more. Sadly, the importance of sleep has been underestimated for too long. In the 20th Century, people started treating sleep almost as if it were an illness. That's change slightly in modern days. We now tolerate our need for sleep, although not too enthusiastically. We still recognize it's vital, but we don't know why exactly why it is. Unfortunately, our knowledge of sleep is still fairly limited and based on intuition, but, on the plus side, there's much more we can learn about it.
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