Hard work is not enough to improve your tennis: what else do you need? 🤔
#TennisWorldUsa #TennisTechnique #improveyourtennis
https://www.tennisworldusa.org/tennis/news/Tennis_Technique/137222/hard-work-is-not-enough-the-importance-of-training-smart/
Jose Altur: "You need to know what to train"
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