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Tennis- Forehand Topspin with More Core & Swing Power

Whether you want to hit with more power, develop more spin or prevent injuries, TennisFlex is the instrument for you.TennisFlex, is the first integrated tenn…
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2 Comments

  • 96florin 4 years ago

    GTFO !

  • TomTrix99 4 years ago

    good idea, but a tennis player should train for rapid motions, and not slow
    exercises for strength imo. For example Mike Tyson never trained weights,
    he punched……