Peak activity at 10pm ? Sound totally like me. Problem is until 9.30-10pm I have no time to do thing I want to, so of course I'm at peak when I do thing I enjoy the most. The very rate times I'm alone at home and not working on my fiat job, I can do shitload of stuff I like in a day. But normal day I have to work until 5.30 it 6pm, then take care of kids, homework, housework, cooking, cleaning, preparing next day, so I'm only free to do stuff alone late. And weekend I enjoy my free day time with my family.