I came across Spoon Theory today:

The basic idea is that [the chron­i­cal­ly ill] have a limited number of spoons available for the day and each action will cost a given number of them – the more demanding the task, the more spoons would be required. The phrase "running low on spoons" can be a useful way of com­mu­ni­cat­ing the need for rest

—Emily Band

I see this sometime with Emma: her various illnesses and sen­si­tiv­i­ties catch up with her and she has little capacity to get things done for a few days. At other times, such as today, she has quite a reasonable amount of energy or “spoons”.

I enjoy good health, as confirmed at my annual physical today, and I have a large number of spoons that I can draw upon.