What is Qigong? Take the word apart: Qi and Gong. Qi, also called Ki (Korean) or Chi (familiar to the West) is Energy, the animating life force. Gong is Chinese for “work” or “movement”. So Qigong is the movement or making of Qi (chi) to flow.
You have probably seen practitioners of Tai Chi in the park. That style is Yang Style, slow and gentle with no heavy impact. The goal is to move and stretch and breathe to build and move the Qi. Those who practice such movements along with meditation have seen remarkable benefits.