Generally, this is a warning from the subconscious. A call for precaution when expressing opinions or judgments that could come back against you.
Gallery of dreams
One of the reasons why people always get involved in road accidents is that, they are tired while driving, or that they lack sleep. Many people do not realize that their performance can be highly affected by having not enough sleep. Sleep deprivation can affect reaction as well as decision making, not to mention that it could make a person unable to drive well. It goes the same with drunk driving.
Quality of Life
Most of us know that sleep can greatly affect the quality of life. There are just a lot of things that can easily affect our sleep. Thus, if you sleep better, you can live better. An 8-hour sleep is the recommended time for people to always have every day.