Dreams are practical reflections of feelings and concerns that were present in your mind at the time you had the dream. You are smart and practical. So are your dreams.

Everybody dreams, but memory for dreams is famously elusive. Even Sigmund Freud, without the benefit of modern technology's electroencephalogram, or EEG, did not know that adult humans dream 90 minutes per night, and that newborns spend eight hours per day dreaming (out of their 16 hours of sleep). REM sleep helps grow the brain!

Dreams are more original than images we see in the media, and are surprisingly unaffected by media. For example, the average person watches several hours of television per day, yet dreams are rarely about shows we have watched or news of the day.

Men and women dream the same amount. The main difference in dream content relates to biology and life events. Women dream about their fertility, pregnancy and delivery, and have more dreams about children - owing to their role as primary caregivers. Other differences in dreams have been exaggerated.