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  • Profile picture of David Brezinski

    David Brezinski wrote a new post

    • 3 years, 10 months ago
    Week 29 - David Brezinski

    Strained calf muscle, pushups and rain = harmony Hmmm, another interpretation of three conflicts. Sunday AM while sparring I felt my calf muscle (right leg) start to seize up. By afternoon I felt a very deep…

  • Profile picture of David Brezinski

    David Brezinski wrote a new post

    • 3 years, 10 months ago
    Week 28 - David Brezinski

    Sunday sparring, coffee and football – My 2022 fall routine I love this time of year. Fall! There is a briskness in the morning air, the leaves are starting to change color and it is football season. Dirk-san and I…

  • Profile picture of David Brezinski

    David Brezinski wrote a new post

    • 3 years, 10 months ago
    Week 27 - David Brezinski

    Sanchin (三戦) – Three Conflicts One thing I am learning over the years I have been training in karate is I have just really scratched the surface. The depth of our own Isshinryu codes and the dimensions of possi…

  • Profile picture of David Brezinski

    David Brezinski wrote a new post

    • 3 years, 10 months ago
    Week 26 - David Brezinski

    Boston Marathon 2023? Well, 2023 is stacking up to be a very exciting year! Of course, my black belt test and should I pass, it will be an accomplishment for me, like no other. I have written this before but I do…

  • Profile picture of Dirk Herfurth

    Dirk Herfurth wrote a new post

    • 3 years, 10 months ago
    Week 29 - Dirk Herfurth

    Meanwhile the One Heart Challenge is down to only David san and me. Geneva san unfortunately got injured during her practice and together with sensei Oliver she decided to continue next year. In addition Geneva san…

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OneHeart Challenge

The OneHeart Challenge is a year-long quest rooted in the principles of of Isshinryu Karate–the ‘One-Heart Way.’ While some will use the challenge as part of their next rank promotion, it is so much more than a black-belt test. This challenge embodies the harmonious fusion of mind, body, and spirit.

Latest Posts

  • Isshinryu Hall of Fame July 18, 2026
  • Extreme Catchup July 17, 2026
  • College Tour July 13, 2026
  • Back Again July 8, 2026
  • East Coast July 8, 2026
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