A tunnel incarnates your interior world. For this reason, if you dream of a tunnel in which there is only darkness, it means that you should pay attention to your feelings to get out. Your existential distress is keeping you from seeing the light. If, in the end, you are able to glimpse a flash of clarity, it indicates that you will overcome the obstructions on the way through your strength of will. Your conscience is amplifying your range of action. (See light , black , and bridge )
Gallery of dreams
Improving memory can be done in a number of ways, and one of those is by having a good night's sleep. During sleep, your mind is still busy and going through the process of consolidation, where it strengthen your memories as well as the "practice" skills, which you have learned while you're awake. According to the associate professor at NYU Langone Medical Center, Dr. Rapoport says that something happens while we are all sleeping, and it helps us learn things better. Thus, if you're trying something new, you can perform it better right after you sleep.
Keep stress at bay
Your cardiovascular health will likely to suffer when you deprive yourself to sleep. Sleeping can surely reduce the levels of stress you're going through and with that, you could have a much better control of your blood pressure. Not having enough of sleep will also affect the levels of your cholesterol, which plays a significant role in heart disease.