One interesting aspect is self-awareness in dreams.

I’ve had an ongoing situation in my dreams where I look at myself in a full-length mirror and see to my surprise that I’ve lost a lot of weight, especially when viewed from the side.

After several such episodes, waking up and realising it was just a dream, when it happens in dreams now I question myself – “Am I actually dreaming?”

In the dreams I used to conclude: “No! I’m definitely awake, this time it’s real!” but in the most recent example, I did actually work out that I was dreaming, and carried on with the rest of the dream.