Monday Tai Chi class meets each week, 1-2:15 at BAX, 421 Fifth Avenue (between 7th & 8th Streets). Fundamentals of Yang style tai chi are in the warm-up and prepare for learning short forms. Improve balance, strength and coordination, increase mental clarity and relaxation. Breathe and enjoy the flow. Open to all. $10 trial class, $20 per class. 718-686-7159. www.MovingChiBrooklyn.com.