TaiChi11 a.m.-12:30 p.m. (new time) Mondays and WednesdaysStarting Oct. 1, TaiChi will move to a longer class and an increased cost of $8. Bob Cheung will join the team of instructors led by Dr. Vincent Chun.Whole Foods Market: Fall Soups1 p.m. Oct. 1Donna DeConto, culinary demo specialist from Whole Foods Market in Woburn, will return to showcase how to make different soups in a blender using seasonal vegetables.