The Butler Area Public Library, 218 N. McKean St., will host a tai chi demonstration at 6 p.m. Tuesday, Dec. 6.

Bill Weber, a certified tai chi instructor with more than 20 years of experience, will demonstrate various forms.

Depending to a certain extent on the type of tai chi being practiced, it is considered safe for people of all ages, as it exercises joints and muscles without placing too much stress on them.

Participants are urged to wear loose-fitting clothing and athletic shoes. A participation waiver is required. For information, contact Dianne at dmccauley@bcfls.org or call the library at 724-287-1715.