I'm thinking about something all of the time when I'm awake. I don't know how someone couldn't be thinking at all if they're awake so I'm pretty sure it works the same way with guys.
Livvie, recently at a get-together, this topic raised a furor;)) you're right, I too seem to be thinking even in sleep..maybe its true for both genders!
I think about boxing all of the time. Fast mind - fast body. Hyper reflexes. You have to be thinking constantly to beat Wladimir Klitschko at his own game. Tyson Fury shows the way.
Most women are very intrsospective. Always thinking /anaylzing the situation, what was said in a conversation/how it was said. Most men are not this way at all. They are concerned with getting their needs met, getting things done - but not over thinking like women.