Karate Fit USA

Karate Fit USA offers Little Ninjas for ages 3-5 years old, using martial arts drills, skill games, and obstacle courses. It also offers Samurai and Youth Karate for kids and young adults, with classes divided into Beginner Samurai, Advanced Samurai, Youth, and Advanced Youth. Adult Martial Arts classes include Karate, Weapons, and Small Circle Jujitsu techniques.

Programs

• Little Ninjas — 3-5 years old · Safe, fun, exciting instruction using martial arts drills, skill games, and obstacle courses.
• Samurai and Youth Karate — kids and young adults · Separated into four levels: Beginner Samurai, Advanced Samurai, Youth, and Advanced Youth.
• Adult Martial Arts — adults · Classes for all ability and experience levels; includes Karate, Weapons and Small Circle Jujitsu techniques.

At a glance

• Ages: 3–18 years old

About the provider

Karate Fit USA has been in the Lawrence area since the 80s. The school says, "The focus is YOU," and that it promotes self-defense and self-development in a positive learning environment. Sensei Swingle has multiple black belts and extensive experience in the US and Japan, and as 5th degree Shihan (Master Instructor) has been Head Instructor since 2018. Karate Fit USA is currently the only recognized Small Circle Jujitsu academy in New Jersey. It was voted "Best School" by Trentonian readers each year it has been in the Lawrence Shopping Center, including a full sweep of three categories in 2026.

Open to all ages (potty-trained, please!) and abilities. Separate classes for different age groups and experience levels. Classes are age- and level-based. Sparring classes are available for students in the four kids groups if desired.

Last updated October 22, 2026.