Chair yoga class registration A fitness instructor leads a gentle form of yoga practiced by sitting on a chair. The next five-week class will begin Aug. 1 and meet weekly at 10:30 a.m. The program is co-sponsored by Holy Cross Hospital. Margaret Schweinhaut Senior Center, 1000 Forest Glen Rd., Silver Spring. 301-754-8800. $25, registration required.

Better Bones classes Designed to improve balance and flexibility. Thursdays and Mondays, 2 p.m. Call to request a physician consent form. Margaret Schweinhaut Senior Center, 1000 Forest Glen Rd., Silver Spring. 301-754-7895. Free.

Drop-in tai chi Student-led sessions. Fridays, 9:15 a.m. Friendship Heights Village Center, 4433 S. Park Ave., Chevy Chase. 301-656-2797. $3; registration required.

Gentle yoga for seniors An instructor from the Mindfulness Center helps participants tone muscles, improve balance and increase circulation. Take a yoga mat and blanket. Fridays, 10 a.m., through Aug. 16. Bethesda-Chevy Chase Regional Services Center, second floor, 4805 Edgemoor Lane, Bethesda. 240-777-8200. $70, registration required.

International folk dancing Sharon Katz teaches Israeli and other dances using easy steps and other movements. No partner required. Friday, 11 a.m. Holiday Park Multiservice Senior Center, 3950 Ferrara Dr., Wheaton. 240-777-4999. $28; HPSI members, $24.

Twilight Runfest An 8K run, a 1K fun run, a block party and music by the Lloyd Dobler Effect. The course winds through Rockville neighborhoods, Montgomery College and a section of Rockville Pike closed to traffic. Concert, Saturday, 7 p.m. Races, 8:40 p.m. Washington Street. Visit the Web site for details and to register. Rockville Town Square, 200 E. Middle Lane. 240-314-8620. $10-$45. Registration required.

Volunteer training for Hospice and Transitions program A 20-hour class for prospective volunteers of the program of the Jewish Social Service Agency. Volunteers provide care for seriously and/or terminally ill people and their families. Training, Sunday through Tuesday, 9 a.m.-4 p.m. JSSA, 6123 Montrose Rd., Rockville. Registration required, contact Amy Kaufman Goott. 301-816-2650. Free.

Guided bike ride on trail Along the Carl Henn Millennium Trail, an 11-mile bicycle route around Rockville. Sponsored by Rockville’s Bicycle Advisory Committee. Sunday, 10 a.m.-noon. Meet at Thomas S. Wootton High School, 2100 Wootton Pkwy., Rockville. 301-279-8550. Free.

Tai chi class The meditative exercise can help to improve balance, coordination and flexibility. Monday, 9:30 a.m. Longwood Community Recreation Center, 19300 Georgia Ave., Brookeville. Free for county residents. 301-774-8881.

“Look Good, Feel Better” For female cancer patients. Cosmetics specialists demonstrate how to deal with skin changes and hair loss. Monday, 1-3 p.m. Suburban Outpatient Medical Center, Suite 1200, 6420 Rockledge Dr., Bethesda. 301-896-3939. Free, registration required.

Zumba on the Plaza Stage A fitness instructor from Washington Sports Club leads an outdoor class. Tuesday, 7 p.m. Fountain Plaza Stage at Downtown Silver Spring, 916 Ellsworth Dr. 301-203-4184. Free.

Patient medication review A pharmacist from Holy Cross Hospital advises patients on side effects, proper doses and drug interactions. Bring medications for review. Wednesday, 10 a.m.-2 p.m. Holy Cross Hospital Senior Source, 8580 Second Ave., Silver Spring. Call 301-754-8800 for an appointment. Free.

Qigong exercise classes Gentle movements that can be practiced sitting or standing. Thursdays, 10:45 a.m., next Thursday through Aug. 29. Bethesda-Chevy Chase Regional Services Center, second floor, 4805 Edgemoor Lane, Bethesda. 301-896-3939. $70, registration required.

— Compiled by Lisa M. Bolton

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