Mental rehearsal is the deliberate, internal practice of an action, performance, or scenario—repeatedly running through it in the mind without physical execution. Athletes use it to refine technique, musicians to memorize and shape passages, surgeons to walk through procedures, and public speakers to anticipate delivery. A substantial body of research, particularly in sport psychology (motor imagery), shows that mental rehearsal can improve performance when combined with physical practice—though the effect is generally smaller than physical practice alone.
Mental rehearsal draws on several imagery channels: visual (seeing the action), kinesthetic (feeling the movement), auditory (hearing tempo or audience), and sometimes tactile or olfactory cues. Your personal Imagery Profile affects which forms of rehearsal land most strongly. Aphantasic athletes, for example, often rely on kinesthetic motor imagery and external observation rather than internal visualization. Effective mental rehearsal usually matches the imagery channel that's actually vivid for the practitioner rather than enforcing a one-size-fits-all visualization protocol.