A psi ball is a ball made of pure psi. It is also known as an energy ball, chi ball, ki ball, prana ball, and life force energy ball, among many other names. Learning to make a psi ball is a versatile tool that should be in the arsenal of any true magician, wizard, witch or any other magical practitioner.
Chi, (Qi or Ki) is the energy of life itself, a balance of yin and yang, positive and negative electromagnetic energy that permeates all of creation. So chi can possibly be described as an electromagnetic phenomenon, a form of light energy, a form of bio-electromagnetic energy or electricity.
To develop your chi, spend 5-10 minutes concentrating on nothing but your breathing. Sit comfortably in a chair or cross-legged on the floor, and then take a deep breath through your diaphragm. You should feel the breath expand your stomach. Hold your breath for about 5 seconds, then exhale completely.