I had a lovely orange and a kiwi fruit for breakfast, dropped off the kids at school/childcare, and flew through some editing work. The brain juices were flowing, no-one was interrupting me, the work was getting done.
Then I had some left-over beef bourguignon with mashed potato. It was yummy. But afterwards I found it much harder to think. A lighter meal at lunchtime seems to be indicated.
I had to do a little shopping with the kids after school and we bought twisties for afternoon tea. And now I feel very tired and lurgy.
This isn't really new information: the wrong food makes you sluggish. I knew that. I just don't act as if I know that.