When you have chronic illness, and or chronic pain, it becomes harder to understand the language your body uses to communicate with you. It becomes harder to deal with unscheduled migraines, pain flares, or stomach pains, especially when you have no idea when the migraines will leave again.
You might do everything you can but still have something happen that you cannot account for. You might be the most careful planner and still have something happen. This means you need to be both a careful planner and impromptu.
It’s a bit like using a computer that will sometimes warn you before it reboots — but only sometimes.
Too bad there’s no translation dictionary available that would translate body language into some language that actually makes sense.