Just been feeling pretty run down lately and not up to slaving over an oven every day. It's probably a lot more unhealthy, but I just prefer to run out for something instead when I feel like that. The heat and humidity play a part in it to be sure (it's been brutal around here recently even with the AC blasting away) but I just haven't been feeling up to snuff.
Sounds like you need a break to recharge the batteries; hope you feel better soon.
Mind you, I bought a takeout meal tonight too though, from a pretty good Lebanese place. Good food, and feeling nicely full now.