The way a good rod first flexes and then extends its muscles as the line quickens, tightens, rises off the water and does figure eights in mid-air is one of the miracles of humanly applied dynamics.
The weird job of acting is that it is so simple. You just see the person in the situation. It is whatever you have to do to get there. Some people want to stay up all night or cut their toe off. For me it is a bunch of reading, and hanging out with real people, I do that. You never know what you are going to get. It might be the shoes people wear.