[janbernhart]

During walks, bike trips, etc. Outside, mild intensity, that's perfect for thinking.

Particularly intersting reads take me a long time because I research what I read, I would say that's part of thinking too. (Which for me means; if I'm not looking stuff up while reading, the material isn't really making me think).

Also, while discussing matters with my wife, mother or father. (And nowadays sometimes also my son, kids ask 'weird' questions that make you think as hell.)