Well you definitely pay more attention to the surface. And I advise staying up on your tetnis shot as well.
I HATE shots! My god they are the worst, there is just something about a doctor and a needle that gets me every time. For me I think its just because I watch soo many horror movies as is that the thought of a punctured foot or something is equivalent to like death or even that scene in Home Alone when the dude is walking up the stairs and pierces his foot with a nail (but I am not falling down stairs in the process haha)