Everything involved in laying down money on a game.
The time spent thinking, reading other peoples opinions, discussing it with people, making your own lines, comparing yours to the books, waiting for the right line, watching the line movement...just everything up to the point you lay money down.
Pretty straight forward question.
Edit - Actually it isn't because some like ingame, and 2nd Half's are quicker where as you might thinking about the superbowl for 2 weeks. I guess I'm thinking of an AVERAGE.