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  • Profile picture of David Brezinski

    David Brezinski wrote a new post

    • 3 years, 8 months ago
    Week 30 - David Brezinski

    Break at Huntington Lake! For the past ~15 years I have had a small group of friends come up to Huntington lake and our family cabin for a week of rest & relaxation in early fall (usually late Sept, early Oct).…

  • Profile picture of Dirk Herfurth

    Dirk Herfurth wrote a new post

    • 3 years, 8 months ago
    Week 31 - Dirk Herfurth

    Update on my Black Belt Project. As you know I am organizing a fundraiser and walk during the “Making Strides of Sacramento” breast cancer event on October, 16th. Currently, as I am writing this blog entry, the Zen…

  • Profile picture of Dirk Herfurth

    Dirk Herfurth wrote a new post

    • 3 years, 8 months ago
    Week 30 - Dirk Herfurth

    Sunday sparring time with David-san. Meeting time is 10AM sharp. We go a few rounds, practice some kata and theorize about world politics. The latter is done over some coffee after our morning routine, which is a…

  • Profile picture of David Brezinski

    David Brezinski wrote a new post

    • 3 years, 8 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, 8 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…

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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

  • First Week Down June 8, 2026
  • 2nd Semester Finals June 7, 2026
  • Black Belt Week One June 7, 2026
  • The Journey Begins June 6, 2026
  • New Black Belt Candidates June 3, 2026
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