(the activity of exerting your muscles in various ways to keep fit; "the doctor recommended regular exercise"; "he did some exercising"; "the physical exertion required by his work kept him fit")
(put to use; "exert one's power or influence")
(carry out or practice; as of jobs and professions; "practice law")
(give a workout to; "Some parents exercise their infants"; "My personal trainer works me hard"; "work one's muscles"; "this puzzle will exercise your mind")
(do physical exercise; "She works out in the gym every day")
(learn by repetition; "We drilled French verbs every day"; "Pianists practice scales")