It is their combined set of thought energies that produce the psychological and physiological responses you experience during your dreams. Nightmares are defined as the flight or fight mechanism. Just as when you are awake, your body in the dream state experiences the same increase in blood pressure and heart rate. Sleepwalking can be defined as a nightmare, as it puts the dreamer in a state of physical action. Dreaming of a passionate past or present lover, gives the feeling of participating with the person on an emotional and biological level.
Daydreams are under our conscious control.
They come from our imagination, that place within us that has no address and is one of the keepers of our every thought, emotion, word and deed positive or negative. When you want to remember a scene or event in your life you may simply close your eyes, think about what you want to remember, and walla your imagination puts on the show for your conscious mind to remember what happened. Literal dreams, are connected to events that have happened to us during the day. If these events are in our thoughts as we drop off to sleep, we begin producing pictures or scenes that are re-enactments of the situation as literal dreams with people and emotions connected to the situation. We do this if we are not comfortable with the information we have already consciously received.