David Schwimmer pointed out that “I am one of the few in the cast who had a rigorous theater training,” which is why he believes that anything “involving a stunt or anything physical” has “got to be finely, carefully, choreographed.”
He worked very hard on any of the “physical comedy in a scene,” going so far as to “meticulously structure and choreograph it” so that he didn’t hurt himself or anybody on set.
Furthermore, the Friends star wanted to be able to perfectly pull act of physical comedy off across many different takes, and his commitment and attention to detail seemingly impressed Matthew Perry.