These are your body's natural defenses and enough peaceful sleep is very important because it is one of the components of this natural defense system.Many cultures actually prepare for sleep time, like calming the mind via meditation, some folks pray to get into the zone ,some folks read or go for a relaxing walk before sleep time,drinking relaxing tea,stretching exercises etc.These days folks tend to go to sleep right after Netflix, or video games or maybe stressing over a problem etc...what happens if you go to sleep that way is that the mind which is like a muscle could still be mulling over the issue, and that might carry over to sleep. 

We separate the different components of air into oxygen, nitrogen, and argon and sell it.

In the interview they talk about how they would rather be worth 50 million today and have lived many amazing memories from their 30's to 70's in age then have worked themselves around the clock to have 200 million but not experienced much in life.Money is only one component of life.

Stocks of tech companies have risen ballooning the stock equity component of people’s income.

After holding costs, bumping up the costs of the rehab for buffers, calling out the contractors for missing several key components in their contract that they didn't factor into the original numbers (maybe to make it seem like a good deal), etc. etc. etc.

When it comes to successful real estate investment, insight and foresight are essential components to a profitable portfolio. 

The key component that you are ignoring is supply.

When you read different posts on this site, you must keep this component in perspective. 

There is a property/fire component and a liability component. 

In basic real estate investing (SFR, duplexes, etc.) there are three components - cash, credit and knowledge.