I didn't feel the need to do it more than a few times a month if I felt like getting a real head start on a particular problem. Plus I'd probably take a longer

I didn't feel the need to do it more than a few times a month if I felt like getting a real head start on a particular problem. Plus I'd probably take a longer lunch or start socializing in the afternoon. Average actual work time still worked out to 7.5hours/day, some days more, some days less.