A book about dreams and our brain notes: “The most common form of mental activity in sleep is not dreaming but thinking. Sleep thinking is not accompanied by sensory illusions and is not bizarre.
कभी - कभी जब हम किसी समस्या को सुलझाने की कोशिश कर रहे होते हैं, तो हमें नींद के दौरान समाधान मिलता है ।