I have that, too.
Last week was not that great. I went ballistic with junk food, some kind of hormonally mood disorder or something.
Picking up P90X again. A day late but I just finished Core Synergistics. I used to hate that workout but I am really enjoying it. Last week I couldn't even do a bow pose. Today I was able to do it just like old times.
ETA: Also did CardioX so that I am on schedule.