Dream with substance? Dreaming all night of eating marshmallows. Awaken to find the pillows are gone?

So long ago I cannot remember. I met an individual that had suffered a substantial physical brain injury. He replayed the same exact dream every night without exception he claimed. He asked me what I thought.

I told him it was all in his mind. This is a true story incidentally and I felt his condition would be hard to live with.

The subconcious seems quite able to generate very stressful things sometimes in the dream state. Odd to me as one would think the brain would prefer to rest.

Your expiring in a dream will wake you. A concept even the subconcious cannot deal with? I am not sure how I know this.

Then there is the concept of sleepwalking. Fortunatly it is not universal. The one time I woke up standing beside the bed ready to urinate. Was my sole experience and enough of one.