Main contents are about sleeping and dreaming in general, dream interpretation, lucid dreaming.
Normally this condition lasts only a few seconds, but sometimes it can go for a minute, which causes a very scary feeling. This is extremely unpleasant but at least not dangerous. There is the dark side of dreams - nightmares, dreams of fear, pain, irrational bad feelings that often cannot be explained. Nightmares occur mostly because some problem disturbs you unconsciously but seriously. Some nightmares carry obvious symbols that may indicate where your problems are, but often it is not that easy.