Andrew Huberman· PhD
The first is in these liminal states between waking and sleep. It really does seem to be the case that when, surprise, surprise, we're completely still and we're emerging from or we're dropping into states of reduced autonomic arousal but our level of thought, if you will, is still active enough that we are aware maybe even lucid dreams and also in dreams, our unconscious mind uses, as I think Jung and Freud pretty well understood, symbols to teach us things.