I'll keep it short and simple: Sunday as a day of rest is a good idea.
I actually wanted to do schoolwork-reading, but I forced myself not to, and I'm glad. I really think more people should try it. I've gotten pretty strict with myself about it over the years (no housework except emptying the dishwasher, for example) and it really helps my sanity.
Plus I got some time in my studio! (More on this project later.)