1) Sometimes, just like in real life, it is just fate. 2) "Scientists from the University Hospital Mannheim in Germany have discovered that sweet smells, such as Roses, in the bedroom can result in sweet dreams. When the smell of roses was wafted under the noses of sleeping volunteers they reported experiencing pleasant emotions in their dreams. An odour of rotten eggs on the other hand had the opposite effect on the test subjects." Source and further information: http://weirddreams.net/ 3) "A nightmare is a dream which causes a strong unpleasant emotional response from the sleeper, typically fear or horror, being in situations of extreme danger, or the sensations of pain, bad events, falling, drowning or death. Such dreams can be related to physical causes such as a high fever, turned faced down on a pillow during sleep, or psychological ones such as psychological trauma or stress in the sleeper's life, or can have no apparent cause. If a person has experienced a psychologically traumatic situation in life—for example, a person who may have been captured and tortured—the experience may come back to haunt them in their nightmares. Sleepers may waken in a state of distress and be unable to get back to sleep for some time. Eating before bed, which triggers an increase in the body's metabolism and brain activity, is another potential stimulus for nightmares." Source and further information: http://en.wikipedia.org/wiki/Nightmares Further information: http://www.ncptsd.va.gov/ncmain/ncdocs/fact_shts/fs_nightmares.html http://psych.ucsc.edu/dreams/Info/content_analysis.html http://www.answerbag.com/q_view/437979