I used to love Mondays, I would work hard during the week studying and working, then Friday I would stay up until sunrise with friends drinking or gaming. I kept this up while working in the corporate world and thought "this is what people mean by feeling refreshed"

It wasn't until I met someone who bent me to be on her schedule, early to bed early to rise on the weekends, where I started feeling depressed by the end of the week, getting Sunday scaries, and having late onset insomnia.

Complete anecdata, but I'm going to start practicing this again on Fridays to see what happens.