Dreams are stories and images that our minds create while we sleep. They can be entertaining, fun, romantic, disturbing, frightening and sometimes bizarre.
Why do dreams occur? Can we control them? What do they mean? Medical News Today investigates the current research on dreams and looks at possible explanations and theories as to why our minds invent these nightly musings.
You will see introductions at the end of some sections to any recent developments that have been covered by MNT's news stories. Also look out for links to information about related conditions.
The second part of this article, discussing how we dream and why we have nightmares is available here.