Comment by tonic_note

I wouldn't go so far as to say the DMN is akin to mediation. The DMN what activates when your brain is not focused on the outside world, eg when you're reflecting on the past, or contemplating the future. That's almost precisely the opposite of mindfulness, which is about the somatic experience of the present moment.

To give you another perspective, I think I suffer from far too much DMN activity. It's very easy for "reflection" to slide into rumination. Increase DMN activity is highly correlated with depression. And I found daily mindfulness meditation to be incredibly helpful at counterbalancing that, spending less time in my head and more time in my embodied experience.