exercise

To exert for the sake of training or improvement; to practice in order to develop.

(intransitive) To perform physical activity for health or training.

(transitive) To use (a right, an option, etc.); to put into practice.

(now often in passive) To occupy the attention and effort of; to task; to tax, especially in a painful or vexatious manner; harass; to vex; to worry or make anxious.

(obsolete) To set in action; to cause to act, move, or make exertion; to give employment to.