Which time of day do you feel most productive in your work?

I like doning important tasks in the morning because I can focus on something clearly. I used to study at night with silent music because there weren\'t any body who bothers me. Howerver, there was adverse effect of studying at night that couldn\'t focus on the regular class at school. Although, I am not a early bird, I can be productive in the early morning if I get up early. I guess that most people agree with it because it is common to be exhausted in the afternoon. There is a research about the treatment results. Patients who received treatment or surgery in the morning got better results than people who received it in the afternoon. It is the same reason above that people\'s brain is clear and they are productive in the morning.