Sounds similar to me,and I don't see anyone saying this yet, so I'll throw in my experience: I believe I was sleeping too much. I was generally in bed for 9 hrs and got 8 hrs and felt that way, but after my kids were born and I started getting 5-7 hours, I've felt much perkier quicker(even if I don't need to do anything with the kids in the morning). Before it would literally take me half or more of a day to start feeling awake.