Almost everyone has nightmares at some point in their life, so what's the true cause of them?

How To Control Your Dreams: http://dne.ws/1S411iD

Read More:
Why do we have nightmares?
http://www.huffingtonpost.com/2013/02...
"If your slumber resembles a bad horror movie, learning about your nightmares and why they happen may help you sleep better."

Common Questions About Nightmares
http://www.asdreams.org/nightma.htm
"A nightmare is a very distressing dream which usually forces at least partial awakening."

Nightmares and PTSD
http://www.ptsd.va.gov/public/problem...
"Nightmares are dreams that are threatening and scary. Nearly everyone has had a nightmare from time to time."

When Nightmares Won't Go Away
http://www.webmd.com/sleepdisorders/...
"Yael Levy recalls having chronic nightmares as far back as elementary school, when she was living in Israel. The grandchild of Holocaust survivors, she says her dreams were filled with images of suffering and death."

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