Artificial intelligent assistant

fartlek

fartlek
  (ˈfɑːtlɛk)
  [Sw., f. fart speed + lek play.]
  A method of training for middle- and long-distance running, in which the athlete runs over country, mixing fast with slow work.

1952 Scholastic Coach XXI. vii. 20 The answer that finally emerged was ‘fartlek’—the Swedish system of training. 1957 Duncan & Bone Oxf. Pkt. Bk. Athletic Training (ed. 2) iii. 23 Fartlek is a pleasant..form of wind sprints across country. Ibid., The essence of a successful fartlek session is enjoyment in hard but varying work. 1958 Times 18 Aug. 3/1 He was out training..and was using the Fartlek or run-as-you-please training which originated from Sweden in the early 1940s. 1968 B. Tulloh Tulloh on Running v. 46 Fartlek, meaning ‘speed play’..is a continuous run in which patches of fast striding are interspersed with jogging.

Oxford English Dictionary

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