Neijin

Neijin, also spelled neijing or nei jin, is a concept in Chinese martial arts and traditional Chinese medicine referring to internal power or energy. It is not a physical substance but rather a cultivation of the body's vital force, often translated as qi or chi. The development of neijin is considered essential for practitioners of internal martial arts like Tai Chi, Baguazhang, and Xing Yi Quan, as it allows for the generation of significant power without relying solely on brute muscular strength.

The cultivation of neijin involves a combination of specific training methods. These typically include precise body mechanics, breath control, and focused intention or mind-body coordination. Practitioners aim to unify their breath and movement, allowing energy to flow smoothly throughout the body. This internal cultivation is believed to enhance health, promote longevity, and improve martial effectiveness. Unlike external martial arts that emphasize muscle and speed, internal arts focus on developing a deep, rooted structure and the ability to channel internal energy for both defense and offense. The subtle nature of neijin means it is often developed through slow, deliberate practice, with an emphasis on feeling and awareness rather than forceful exertion. Its principles are also applied in practices like Qigong, which are primarily focused on health and well-being.