The J. A. Walters Family YMCA will host the World Tai Chi and Qigong Day from 10-11:30 a.m. Saturday, April 27. Members and non-member will be welcome to the free event at the J. A. Walters Family YMCA, 2455 Howard Road, Gainesville. Tai Chi is a Chinese exercise of slow, meditative movements designed to increase focus, relaxation and balance.