Now I think I understand why Dad drinks 2 cups of coffee everyday: one early in the morning during breakfast, and one in the late afternoon. 1st theory is that the coffees are preparation for the gruelling drives to and from the office, when the traffic is horrible; 2nd theory is that a person simply needs 2 cups of coffee to keep him going through the day -- I had 1 cup of coffee in the morning and now I'm feeling really sleepy, hence the need for a second cup very soon.