tone up

English

Verb

tone up (third-person singular simple present tones up, present participle toning up, simple past and past participle toned up)

  1. (transitive, intransitive) To cause to give a higher tone or sound; to give a higher tone to; to make more intense; to heighten; to strengthen.
  2. (transitive, intransitive) To firm and strengthen the muscles of the body by regular exercise.

Translations
to firm and strengthen the body through exercise
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