Rehearsal isn't only about the time you put in; it's also about the effort you put forth and how you utilize this time. Do you have specific short-term and long-term goals that you hope to achieve through rehearsal? Are you taking your rehearsal time seriously? Is your energy level in rehearsal where it would need to be in a performance situation? Even though you might be in a basement studio space or somebody's apartment, you need to resist the impulse to be casual or uncommitted.
p. 352 of the UCB Comedy Improvisation Manual













