I prefer to walk around and think. Legs moving helps me think
  better. But I can think sitting too.

  I also do a lot of thinking while actively using my hands or
  busy.

  Where I get almost *no* thinking done that's helpful is when I
  am talking to people. Then I'm thinking quickly and reacting as
  best I can, but the process is exhausting to me. A good
  conversation though, is like thinking to myself, just with
  another person present.