I can and do write on Sunday; it’s a 5 day schedule based around my religious observance; Shabbat lasts from sunset on Friday until and hour after sunset on Shabbat. Part of my religious observance is to refrain from creative activity. Friday is generally consumed with cooking for the Shabbat meals including a festive dinner every Friday night. There are a few other holidays as well during the year. Squeezing time in before or after would be a option, but as I said, refraining before and after is woven into my life. (I liked the line too ;). I’m looking forward to seeing if the warm up also helps me overcome my resistance to working on my novel.