At United Fitness, our Cardio Kick classes consist of KONGA and VYPA workouts, which are a mix of boxing, cardio, sculpting, kickboxing, and plyometrics. With over 15,000 square-feet, our indoor fitness center, close to Manassas, Virginia, is equipped with state of the art equipment and multiple fitness amenities to CREATE THE BEST U! Our fitness instructors are top-notch and our gym is one of the best in Prince William County and Northern Virginia.