constrait

effort strength violence

arm brunt clout coercion compulsion conscription draft duress dynamism enforcement exaction extortion fury horsepower impact impetus impulse might momentum muscle pains potency potential pow pressure punch push sinew sock speed steam stimulus strain stress stuff subjection tension trouble velocity vigor

full head of steam strong arm what it takes

passivity

discouragement ease happiness hindrance idleness lethargy peace powerlessness relaxation weakness

incompetence