The Art of Tang Soo Do involves the development of the mind and the body. There are three areas of development that we focus on in our training: Neh Gung (Internal Energy), Weh Gung (External Energy) and Shim Gung (Mental/Spiritual Energy). Neh Gung can be considered our breath during our technique, Weh Gung is our body’s action (use of hip) and Shim Gung is our attitude; our discipline (Moo Do). TSD MDK Founder, Kwan Jang Nim Hwang Kee, introduced a systematic and scientific method of training to enable us to realize our full potential. Through this system, each area builds on the next and is progressively more involved.