Quad Stretches i think because, they support his feet if they give out he's gonna fall and he needs to wake them up and make them work out.
It is a practice-related complaint. It's usually caused by nurses or doctors not taking precautionary measures and making sure that their hands are cleaned and that they wear masks when operating on someone or assisting in an operation. It could also be unclean untensils that are used for surgery too!
I believe it is the first option
