What is the meaning of exercising?

noun

• The activity of exerting your muscles in various ways to keep fit.
  • usage: "the doctor recommended regular exercise"; "he did some exercising"; "the physical exertion required by his work kept him fit"
  • synonyms: exercise, physical exercise, physical exertion, workout

verb

• Put to use.
  • usage: "exert one's power or influence"
  • synonyms: exert, exercise
• Carry out or practice; as of jobs and professions.
  • usage: "practice law"
  • synonyms: practice, practise, exercise, do
• Give a workout to.
  • usage: "Some parents exercise their infants"; "My personal trainer works me hard"; "work one's muscles"; "this puzzle will exercise your mind"
  • synonyms: exercise, work, work out
• Do physical exercise.
  • usage: "She works out in the gym every day"
  • synonyms: exercise, work out
• Learn by repetition.
  • usage: "We drilled French verbs every day"; "Pianists practice scales"
  • synonyms: drill, exercise, practice, practise