1. One third of our lives is spent sleeping.

2. In your lifetime, you would've spent about 6 years of it dreaming. That is more than 2,100 days spent in a different world.

3. Dreams have been here as long as mankind.  Back in the Roman Era, striking and significant dreams were submitted to the Senate for analysis and interpretation.

4. Everybody dreams. EVERYBODY! Simply because you do not remember your dream does not mean that you did not dream.

5. Dreams are indispensable.  A lack of dream activity can mean protein deficiency or a personality disorder.

6. We dream on average of one or two hours every night. And we often even have 4-7 dreams in one night.

7. Blind people do dream.  Whether visual images will appear in their dream depends on  whether they where blind at birth or became blind later in life. But vision is not the only sense that constitutes a dream. Sounds, tactility, and smell become hypersensitive for the blind and their dreams are based on these senses. 

8. Five minutes after the end of the dream, half the content is forgotten. After ten minutes, 90% is lost.

9. The word dream stems from the Middle English word, dreme which means "joy" and "music".

10. Men tend to dream more about other men, while women dream equally about men and women.

11. Studies have shown that our brain waves are more active when we are dreaming than when we are awake.

12. Dreamers who are awakened right after REM sleep, are able to recall their dreams more vividly than those who slept through the night until morning.

13. Physiologically speaking, researchers found that during dreaming REM sleep, males experience erections and females experience increased vaginal blood flow - no matter what the content of the dream. In fact, "wet dreams" may not necessarily coincide with overtly sexual dream content. 

14. People who are giving up smoking have longer and more intense dreams.

15. Toddlers do not dream about themselves. They do not appear in their own dreams until the age of 3 or 4.

16. If you are snoring, then you cannot be dreaming.

17. Nightmares are common in children, typically beginning at around age 3 and occurring up to age 7-8.

18. In a poll, 67% of Americans  have experienced Deja Vu in their dreams, occurring more often in females than males.