Emotions as 'Inner Muscles'

Fellings are the body at work. "I feel like this"; "I feel like that": they are statements of physical sensations. As such emotions can be thought of as the inner musculature of the human system. Everyone has them. Think of this way: I have as many muscles as Governor Arrnold S; only his are more developed. The chore of an actor is to work inner muscles; to be in inner physical shape so when it is time to exhibit our muscles/emotion in a performance, we will be "buff", as they say. Arnold got that way through hard work at the gym. Should a good actor work out his muscles any less? Not is he/she wants to be Mr. or Ms. Universe...or a "star" in acting equivalence.