Has anybody ever had one of those days where they just can't get motivated to do anything?

Yesterday I had a great day and got so much done around my apartment…and had planned to do the same today. Now, this morning I get up and I find that I just want to go back to bed. I don’t even feel like cooking breakfast, and I definitely do not feel like doing any work around the place. Do other people feel like this on occasion? How do you overcome this feeling, or do you not even try?