You have 4 to 7 dreams every night.
Women have more nightmares than men.
During REM sleep your skeletal muscles are paralyzed. Otherwise you would act out your dreams. Alcohol, prescription drugs and illegal drugs can cause nightmares. People who are giving up smoking have longer, more intense dreams. Women dream more of indoor settings, they notice more color, facial and clothing details, they have more conversations and dream of men and women equally.