After a while she said to me 'wobbly today?' I replied 'yeah a little bit how'd you know?' It was then that she told me that when I had a good day the floor was clean and dry but on a wobbly day there was a trail of coffee from the kitchen to the living room :) I hadn't even noticed that my coffee was half empty when I sat down.
I still use this as a test today. Only difference now is I'm aware I'm doing it so now it's like a medical test to have my coffee in the morning