Martial art forms refer to various styles of combat practices originating from different cultures and regions around the world. Some common examples include Karate, Taekwondo, Kung Fu, Judo, Brazilian Jiu-Jitsu, Muay Thai, Boxing, and Krav Maga.

Each form has its own techniques, training methods, and philosophies, and may be used for self-defense, physical fitness, competition, or personal development.

The length of a martial arts form can vary greatly depending on the style and the purpose of the form. Some forms may only take a few second to perform, while others may take several minutes or even longer. Forms are never judged on how long they are, rather on intensity, precision and execution of all movements.

In traditional martial arts, forms are often choreographed sequences of techniques and movements that are practiced repetitively to improve technique, balance, and fluidity of movement. In some cases, forms may be performed as part of a grading or competition, and the length of the form may be determined by the specific requirements of that event and individual schools.

It is difficult to determine the most popular martial arts form as it can vary greatly depending on the region, culture, and personal preferences of the practitioner. However, some of the more well-known and widely practiced forms include Taekwondo, Karate, Judo, and Kung Fu.

• Taekwondo, originating from South Korea, is a popular form that emphasizes high, powerful kicks and is known for its dynamic and acrobatic techniques.

• Karate, originating from Okinawa, Japan, is a form that incorporates punches, kicks, knee strikes, and open-hand techniques, and is widely practiced for both self-defense and sport.

• Judo, originating from Japan, is a grappling-based form that emphasizes throws and submissions and is widely practiced for both sport and self-defense.

• Kung Fu, originating from China, is a diverse collection of forms that encompasses a wide range of techniques, including strikes, kicks, grappling, and weapons use, and is often performed for self-defense, physical fitness, and personal development.