упражняться bedeutet auf Englisch

exercise [exercised, exercising, exercises]▼(exert for the sake of training)
verb
[UK: ˈek.sə.saɪz] [US: ˈek.sər.ˌsaɪz]

practise [practised, practising, practises]▼(to repeat an activity as a way of improving one's skill)
verb
[UK: ˈpræk.tɪs] [US: ˈpræk.tɪs]

work out▼(to exercise)
verb
[UK: ˈwɜːk ˈaʊt] [US: ˈwɝːk ˈaʊt]