The action pictures I've been typically involved with, when somebody gets punched, you really feel the punching, and when somebody gets shot, you really feel the shot.
If I leave my computer, I'm probably not going to get back for hours. If I take a few minutes to answer questions and go web surfing, then guilt kicks in and I get back to work.
Acting is not that far from mental disease: An actor works on splitting his character into others. It is like a kind of schizophrenia.