isometrics

Noun
  1. Muscle-building exercises (or a system of musclebuilding exercises) involving muscular contractions against resistance without movement (the muscles contracts but the length of the muscle does not change) (synset 100629089)
    is a type of: exercise, exercising, physical exercise, physical exertion, workout - the activity of exerting your muscles in various ways to keep fit
    same as: isometric exercise

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