you dream every night, only you forget those that are not in REM sleep. If you didn't, you would hallucinate when a conscious REM phase hit.
I dream
I do not dream
1 - 3 times per week
4 - 6 times per week
7 - 9+ times per week
Everytime I fall asleep
Rarely are these dreams nightmares
Sporadically are these dreams nightmares
Often are these dreams nightmares
These dreams are always nightmares
These dreams are never nightmares
you dream every night, only you forget those that are not in REM sleep. If you didn't, you would hallucinate when a conscious REM phase hit.