I try and get as much coding done during the day as I possibly can. I used to be a code-a-holic and would want to code at home after work as well (on work projects). I realized not too long ago that Programming is a means to an end and not
the end in itself. Family and home life are really quite important. So for me personally, I have no problem trying to cram 8 hours of coding into one day.
Of course, I don't actually do
8 hours of coding a day (grin). C'mon, there's e-mail to read, mailing lists to browse, use.perl.org journals, slashdot...