It could have been a big deal though. I think it's best to just act naturally.

I know in my case, laying low at home for a few days prior to my evals is necessary for me to be able to physically shower and get dressed the day of an eval. It's important to tell them that......and to tell them the effects of the exertion of the exam may result in you being bedbound for days afterwards. The evaluator can't 'see' that, but it can be documented as your verbal response.