Diabetes Expo With screenings, educational displays, “ask the dietician,” samples of healthful food and other giveaways. Thursday, 5:30-8:30 p.m., Calvert Memorial Hospital, 100 Hospital Rd., Prince Frederick. 410-535-8233. Free. Registration required.

Lexington Park blood drive Thursday, 9 a.m.-2:30 p.m. United Methodist Church, 21760 Great Mills Rd., Lexington Park. 800-733-2767. www.redcrossblood.org. Appointments recommended.

Yobics chair fitness Yoga-inspired exercises performed while sitting. Fridays, 12:30-1 p.m. Southwinds Active Adult Community, 4225 Southwinds Pl., White Plains. 301-932-4297. $5.

Breast cancer support group, Tuesday, 6:30-8 p.m., Calvert Memorial Hospital (Center for Breast Cancer), 100 Hospital Rd., Prince Frederick. 410-414-4569. Free.

Gentle yoga Led by Anne Machetto. Tuesdays, 11 a.m. St. Paul’s Episcopal Church, 4535 Piney Church Rd., Waldorf. 301-934-2883. Free.

Zumba exercise classes A fundraiser for the rescue squad. Tuesdays and Thursdays, 5:45-6:45 p.m. Hollywood Volunteer Rescue Squad, 43256 Rescue Lane. 301-737-2336. $7; five classes, $25.

Zumba exercise classes Rescue squad auxiliary fundraiser. Tuesdays and Thursdays, 7 p.m. Mechanicsville Fire Department Social Hall, 28165 Hills Club Rd. 301-884-4709. meghannet@yahoo.com. $6 per class.

National Alliance on Mental Illness programs For people living with mental health issues, Southern Maryland NAMI offers individual and family support groups throughout Calvert, Charles and St. Mary’s counties. 301-737-1988. www.namisomd.org.

Reproductive health clinic For men and women. St. Mary’s Health Department, 21580 Peabody St., Leonardtown. 301-475-4419.

Prostate-health screening Calvert Memorial Hospital, 100 Hospital Rd., Prince Frederick. 410-535-8233. www.calverthospital.org. Free.

Cardiac/pulmonary illness rehab program Sponsored by Calvert Memorial Hospital. 410-414-4527. www.calverthospital.org.

— Compiled by Bonnie Smith

Submit an item To smliving@washpost.com at least 14 days before publication date.