The underground normally symbolizes the subconscious. Things that are covered, interred, or that emerge from the ground represent qualities that come from the deepest part of your personality. It could be a positive or negative dream. Digging in the ground could be frightening, but sometimes it is useful in order to know secrets and hidden truths that you would otherwise miss. Further, exiting an underground tunnel and reaching the light represents a triumph over adversity. To interpret this dream it is important to pay attention to the sensations that you feel, and to the events that occur therein.
Gallery of dreams
Body reactions during sleep
Most of us must have experienced hallucinations or night mares. When we experience such dreams we are unable to move or react. This stage is referred to as sleep paralysis. This type of dream occurs in between wakefulness and REM. As it occurs during the REM stage, it causes complete muscle weakness preventing the individual reacting to the 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.