Dreaming of your own beheading indicates that you never get to implement the ideas that come to your mind. This dream shows that you do not act too consistently due to your tendency of getting carried away by the first impulse. (See head )
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.
Do animals dream?
Research conducted by various scientists show that animals do experience dream while sleeping. They also experience similar sleep stages like human beings - REM and Non-REM. If you have noticed a dog sleep, it might sometimes wag its tail, this indicates some response to its dream. A study was conducted in a cat by removing a part of the brain stem, which will not prevent it from reacting to the dream during REM. It was noted in some cats they were aggressively chasing mice as in reality.