by Lauren J. McDermott I live and work in fast paced New York City, where I am constantly on the go. Unfortunately, I wake up frequently feeling drained and anxious. Tai Chi / Qigong online classes with River Flow Holistic help me to rejuvenate, invigorate, and regain my calm. I have tried many different techniques and herbs, however this practice works best and immediately shifts my groggy, anxious state. When asked why I practice Tai Chi / Qigong I say, "it is mathematical"