Through 1,000s of years of practice, Taoist Masters from Wudang tradition have developed the Yang Sheng "Nourishing Life" Qigong method.
Because it teaches students to build their most fundamental internal strength, it is practiced by all teachers of the martial arts. These are the building blocks for all other forms.
Yang Shen focuses on the most fundamental "pre-heaven" Qi and replenish it. This is he energy you were born with that is depleted by life stress and illness. In China they say "living without pre-heaven qi is like cooking without rice."
This exercises will teach you to build up your own fund or energy. It is like making an "elixir of life". In Chna this is called immortality training.