This question is quite conflicting for me, I feel my sleep schedule has been messed up for quite sometime. Hence, I am more productive at Night with getting my stuff done also due to a lot of distractions that make me procrastinate. However, when I am able to have a morning all to myself I find that I can get a lot of stuff done and I am more productive even more than at night. The problem of course is waking up early and actually getting that time in the morning.