Instructors

Black belt illustration

Lone Star Institute of Taekwondo's certified black belt instructors (1st-7th degree) are recognized by the United States Taekwondo Grand Masters Society, with many also part of USA Taekwondo. With over 100 years of combined experience, they share their passion and uphold Taekwondo's tenets through dedicated instruction.

Master David Kestenbaum smiling in uniform

Owner / Head Instructor

Master David Kestenbaum

7th Degree Black Belt

United States Taekwondo Grandmasters Society & Kukkiwon 6th Dan

Master David Kestenbaum has dedicated his life to Taekwondo since age 5. Now a 7th degree Black Belt certified by the Kukkiwon world headquarters in Seoul, South Korea, and the United States Taekwondo Grand Masters Society, he combines world-class competitive experience with a passion for developing students of all ages.

Background & Training

At 24, Master Kestenbaum was recognized as one of the youngest Taekwondo Masters in the world. Over more than 20 years of study, he has trained on two continents and mentored under Grand Master Won Chik Park, Grand Master Roy Kurban, and Grand Master Martin Hall, along with five additional Masters and numerous Olympic and National Team athletes.

Competition Achievements

Master Kestenbaum has competed successfully in National and International competitions in both Karate and Olympic Style Taekwondo, winning multiple Texas State titles as well as U.S. and Canadian championships. In 2002 he was invited to train at the U.S. Olympic Training Center in Colorado Springs. With over 500 trophies and medals to his name, he continues to compete in the Texas Karate League where he has won over 25 Grand Championships in forms and sparring.

Education & Teaching Philosophy

A graduate of the University of Texas Arlington with a bachelor's degree in exercise science, Master Kestenbaum has trained athletes from youth to professional levels. He brings a deep passion for Taekwondo, fitness, and helping people reach their greatest potential to every class he teaches.

Master David Kestenbaum executing a flying side kick during a demonstration

“Our mission has always been simple — to build stronger people, not just stronger kicks. Taekwondo is a lifelong pursuit of balance, respect, and courage, and we’re honored to guide each student on that journey.”

- Master David Kestenbaum
Master Jenny Yu smiling in uniform

Program Director / Head Instructor

Master Jenny Yu

5th Degree Black Belt

Cliff Nelson Rec. Center • Dottie Lynn Rec. Center • The Montessori Academy

Master Jenny Yu brings over two decades of dedication to Taekwondo and a gift for teaching that has made her an integral part of Lone Star Institute of Taekwondo. Teaching at various schools and recreation centers, she specializes in developing young martial artists and building strong foundations in students of all ages.

Background & Training

Master Yu began her Taekwondo training in June 1999 at the American Black Belt Academy under Grand Master Roy Kurban, achieving her 1st degree black belt in October 2009. She continued her journey at the Traditional Martial Arts Institute under Mr. Shaun House, earning her 2nd degree black belt in 2011. Master Yu then joined Lone Star Institute of Taekwondo, where she has become a cornerstone of the teaching and training programs.

Teaching Experience

Since 2011, Master Yu has led the Taekwondo program at The Montessori Academy, where she excels at teaching and developing young martial artists. Her patient approach and clear instruction style have helped countless students discover their potential through martial arts.

Education & Teaching Philosophy

A graduate of the University of Texas Arlington with a bachelor's degree in mathematics and a minor in physics, Master Yu brings analytical thinking and structured problem-solving to her teaching. She has a passion for Taekwondo, education, and encouraging others to be the best they can be.

“Taekwondo teaches more than movement — it teaches order, focus, and the quiet confidence that comes from understanding how to improve one step at a time. My goal is to help every student find joy in that process.”
- Master Jenny Yu
Master Bradford Woods smiling in uniform

Program Director / Head Instructor

Master Bradford Woods

5th Degree Black Belt

Elzie Odom Recreation Center

Master Bradford Woods discovered Taekwondo the same way many parents do—watching his son take class. What began as support from the sidelines quickly became a personal passion when he decided to jump in and train alongside him. Now a 5th degree black belt, Master Woods leads the program at the Elzie Odom branch of Lone Star Institute of Taekwondo.

Competition Achievements

Master Woods has been ranked in the top ten competitors of the Traditional Karate League three times and has earned numerous medals, trophies, and accolades throughout his martial arts journey.

Community Leadership

Beyond the dojang, Master Woods has a long history of serving his community. He has coached youth football, served as vice president of the Seguin High School Band Booster Club, and remains an active leader in his church. He currently works for McCormick & Co.

“Discipline and respect are not just values we recite — they’re habits we build through consistent effort. Whether on the mat or in life, Taekwondo reminds us that the best victories come from perseverance and humility.”
- Master Bradford Woods
Master Joseph Louis in uniform

Instructor

Master Joseph Louis

5th Degree Black Belt

Cliff Nelson Rec. Center • Dottie Lynn Rec. Center

Master Joseph Louis has been dedicated to Taekwondo for over two decades, beginning his journey in 1999 at the Dottie Lynn Recreation Center under Master Henry. His commitment to the art is evident in his continued growth as both a martial artist and instructor within the Lone Star Institute of Taekwondo family.

Background & Training

After 10 years of diligent training, Master Louis earned his 1st degree black belt in 2009. He continued his journey at Lone Star Institute of Taekwondo, achieving his 2nd degree black belt in 2011. Master Louis continues to train and compete, constantly refining his skills and knowledge.

Teaching Experience

Master Louis has become an integral part of LSIT's family of instructors, teaching at both Cliff Nelson Recreation Center and Dottie Lynn Recreation Center where his journey began. He brings patience, dedication, and a deep understanding of the challenges students face on their path to black belt.

Professional Life

Master Louis is employed by the United States Postal Service, balancing his professional career with his passion for teaching and training in Taekwondo.

“I tell my students that Taekwondo is a long road, but it’s never a lonely one. Every kick, every correction, every small win is shared — that’s what makes this art a family and not just a sport.”
- Master Joseph Louis

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예의

Courtesy

Ye-wee

Courtesy (예의, ye-wee) reminds us to show respect in the dojang and beyond through sincere etiquette and kindness.

염치

Integrity

Yom-chee

Integrity (염치, yom-chee) calls for honesty, strong morals, and the courage to do what is right even when it is difficult.

인내

Perseverance

Een-nay

Perseverance (인내, een-nay) is the willingness to keep pushing toward every goal despite obstacles in training or life.

극기

Self Control

Gook-gee

Self control (극기, gook-gee) keeps thoughts, emotions, and actions in balance so we can respond with a steady mind and body.

백절불굴

Indomitable Spirit

Baekjool Boolgool

Indomitable spirit (백절불굴, baekjool boolgool) is to be defeated a hundred times yet never bent — the heart of true strength.

예의

Courtesy

Ye-wee

Courtesy (예의, ye-wee) reminds us to show respect in the dojang and beyond through sincere etiquette and kindness.

염치

Integrity

Yom-chee

Integrity (염치, yom-chee) calls for honesty, strong morals, and the courage to do what is right even when it is difficult.

인내

Perseverance

Een-nay

Perseverance (인내, een-nay) is the willingness to keep pushing toward every goal despite obstacles in training or life.

극기

Self Control

Gook-gee

Self control (극기, gook-gee) keeps thoughts, emotions, and actions in balance so we can respond with a steady mind and body.

백절불굴

Indomitable Spirit

Baekjool Boolgool

Indomitable spirit (백절불굴, baekjool boolgool) is to be defeated a hundred times yet never bent — the heart of true strength.