Core Strengthening 101: 5:30 p.m. Thursdays, March 5, 12, 19 and 26, Wakefield Civic Center, 467 Main St. Cost: $65 check sent to Connie Lafond C/O Wakefield Civic Center, 467 Main St., Wakefield. For information: bodybyconnie@gmail.com. Four weeks of a 45-minute weekly class of core strengthening exercises offered by Connie Lafond, a certified Pilates instructor and 40-year-long fitness professional and personal trainer. Attendees only need to bring a mat. The class size is limited, and the deadline to sign up is Feb. 28; save $5 by registering by Feb. 26.

Matthew Byrne concert: 8 p.m. March 7, Linden Tree Coffeehouse, Universal Unitarian Church, 326 Main St., Wakefield. Cost: $20; $10, those younger than 18. For information: 781-246-2836; http://LindenTreeCoffeehouse.org. Singer-songwriter Matthew Byrne is an interpreter of traditional songs. With his vocals and guitar work, Bryne is currently supporting his newest release, “Horizon Lines” — a collection of traditional material from both sides of the Atlantic that continues Byrne’s journey through his own musical lineage.

Sen. Jason Lewis office hours: 10:30-11:30 a.m. March 9, McCarthy Senior Center, 30 Converse St., Wakefield. For information: 617-722-1206. Sen. Jason Lewis will host his monthly open office hours where residents are encouraged to drop in to speak with Lewis and raise any concerns that they would like. Those who are unable to attend can contact Lewis’ office to arrange a meeting.