Health and Wellness Expo, the event, sponsored by Sentara Healthcare, Prince William Chamber of Commerce and Prince William County Parks and Recreation, begins with a 5K race and 1-mile fun run followed by fitness demonstrations, music performances, vendors and exhibits by local businesses, gyms and medical professionals. 8 a.m.-noon, Northern Virginia Community College, 15200 Neabsco Rd., Woodbridge. Free. 703-323-3000 or www.nvcc.edu/foundation.
Al-Anon Family Group newcomers meeting, 7:15 p.m.; regular meeting, 8 p.m., Haymarket Baptist Church, parish hall, 14800 Washington St., Haymarket.703-969-2726.
Al-Anon Family Group 7 p.m., St. Paul United Methodist Church, 1400 G St., Woodbridge.703-534-4357.
Overeaters Anonymous 7 p.m., Bethel Lutheran Church, 8712 Plantation Lane, Manassas.703-823-6682 or www.oanova.org.
Overeaters Anonymous sunrise meeting 7 a.m., St. Benedict Monastery, 9535 Linton Hall Rd., Bristow. Free. 202-437-5070 or www.oanova.org.
Stress reduction talk, ACTS/Helpline staff share ideas and tips to reduce stress and anxiety. 10:30 a.m., Woodbridge Senior Center, 13850 Church Hill Dr., Woodbridge. Free. 703-792-5081.
Prostate cancer support group 11 a.m.-1 p.m., Westminster at Lake Ridge, 12191 Clipper Dr., Lake Ridge. Free. 703-497-0628.
Cancer support group, a meeting for cancer patients, survivors and their families. 7 p.m. Tuesdays, Prince William Hospital, Medical Building 1, 4th Floor, Conference Room C, 8700 Sudley Rd., Manassas.703-895-4857.
Diabetes support group 7 p.m., Sentara Northern Virginia Medical Center, 2300 Opitz Blvd., Woodbridge. Free. 703-670-1767 or 540-659-1800 x1767.
Mental health support group for caregivers, family and friends of people with mental illness, sponsored by the National Alliance on Mental Illness. 7 p.m., Sentara Northern Virginia Medical Center, Conference Room 1, 2300 Opitz Blvd., Woodbridge. Free. 703-590-0783 or www.nami-pw.org.
Parenting class Systematic Training for Effective Parenting (STEP), a six-week class for parents of school-age children. 7-9 p.m. Tuesdays, through Nov. 13, Sudley North Government Center, 7987 Ashton Ave., Manassas. $40; registration required. 703-792-6288.
Weight loss support group 11 a.m., Spirit and Life United Methodist Church, 4223 Dale Blvd., Woodbridge. Free. 703-878-7779 or 571-277-7976.
Surviving After Suicide support group, a confidential group for family members and friends who have lost a loved one to suicide. Call for time and location. Second and fourth Thursdays. Free. 703-368-4141.
Overeaters Anonymous Meditation and Writing meeting 7 a.m., St. Benedict Monastery, 9535 Linton Hall Rd., Bristow. Free. 703-361-0106 or 703-754-9237 or www.oanova.org.
Flu vaccine clinic for seniors, provided by Sentara Potomac Hospital. 9-11:30 a.m., Woodbridge Senior Center, 13850 Church Hill Dr., Woodbridge. Free, registration required. 703-792-5081.
Grief support group 7 p.m., Occoquan Bible Church, 3700 Old Bridge Rd., Woodbridge. Free. 703-878-4673.
Parenting class Systematic Training for Effective Parenting (STEP), a six-week class for parents of young children. 7-9 p.m. Thursdays, through Nov. 15, Sudley North Government Center, 7987 Ashton Ave., Manassas. $40; registration required. 703-792-6288.
Families Anonymous a 12-step program for adults with family members with substance-abuse problems. 8 p.m., Manassas Presbyterian Church, 8201 Ashton Ave., Manassas.703-928-9385 or www.familiesanonymousva.com.
Flu vaccine clinic for seniors, sponsored by Inova HealthSource. 9-11:30 a.m., Prince William Senior Center, 9320 Mosby St., Manassas. $30; free with a Medicare Part B card. 703-792-5081.
Pulmonary support group for people with chronic respiratory disease and their families. Noon-1 p.m., Sentara Northern Virginia Medical Center, 2300 Opitz Blvd., Woodbridge. Free. 703-670-1881 or 540-659-1800, ext. 1881.
Alcoholics Anonymous 8:30 p.m., Concordia Lutheran Church, 3637 Graham Park Rd., Triangle.703-293-9753.
Fit for Christ boot camp, the 75-minute class begins with a prayer and warm-up followed by a quick-paced workout with weights. 8 a.m. Saturdays, First Baptist Church of Woodbridge, 13600 Minnieville Rd, Woodbridge. $10; children 9-15 free with an adult. 571-437-8641 or www.fitforchrist.us.
Walk to End Alzheimer’s, participants are encouraged to raise funds for Alzheimer’s Association. 9:30 a.m.-noon, Loy E. Harris Pavilion, 9201 Center St., Manassas.703-359-4440 or www.alz.org/nca.
Anxiety support group Recovery Inc., for people who have anxiety, depression, fear or other emotional problems. 10 a.m.-noon, Cokesbury United Methodist Church, 14806 Blackburn Rd., Woodbridge.703-441-0840.
National Women’s Health and Fitness Day Zumba, yoga and pilates classes, tours of the Sentara mammography van and seminars on topics such as breast cancer and avoiding sports injuries, sponsored by Sentara Northern Virginia Medical Center. 1-5 p.m., Sport and Health Club, 2401 Rock Bridge Ct., Woodbridge. Free, registration required. 800-736-8272.
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Mail: Health Calendar, Prince William Local Living, The Washington Post, 9420 Battle St., Manassas, Va. 20110.