Much More than a Black-Belt Test

Join a team of like-minded karate students as we embark on a journey through the OneHeart Challenge, 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.

Join us in the spirit of Isshinryu, where for us, the journey to black-belt becomes a quest to bring our practice Out of the Dojo and Into the World.

It's About the Small Things

The OneHeart Challenge is a fine example of how small things, done consistently over time, add up to big things. Together, here is what we have accomplished so far!

9,048

Repetitions of Kata

8,113

Rounds of Sparing

424,224

Push-Ups

455,193

Sit-Ups

9,390

Miles Traveled

9,139

Acts of Kindness

39,670

Minutes of Meditation

46

Books Read

Meet our Challengers

Learn How to Join the OneHeart Challenge

If our work speaks to you, learn how you can join us in the Challenge.

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Nails
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One Month Left
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My Karate History
OneHeart ChallengeMy Karate HistoryMy karate journey started when I was 7 years old. My brother had joined 9 months prior and was actually the reason I joined in the first place; unfortAvi MartensSeptember 2, 2026