Chair yoga The East Columbia 50 Plus Center at the East Columbia library, 6600 Cradlerock Way, will offer "Chair Yoga," an easy introduction to yoga that helps to ease the pain of arthritis, reduce fatigue and improve circulation and breathing, at 10 a.m. Tuesdays. Cost is $25 a month. Reservations: 410-313-7680.

Also at East Columbia 50 Plus Center:

•An evening exercise class will be held from 6 p.m. to 7 p.m. Mondays and Wednesdays. Personal trainer Sharon Cunningham is the instructor.

•A belly dance class will be held from 1 p.m. to 2 p.m. Tuesdays. Instructor Camila Karam will teach hip movements, stretches, arm and hand techniques and veil dancing. Cost is $25 a month.

•A yoga class with Camila Karam is being offered from 3 p.m. to 4 p.m. Tuesdays. Cost is $24 a month.

•Beginner's tai chi classes take place 4 p.m. to 5 p.m. Wednesdays. Cost is $24 a month.