Posture and Tai Chi, class led by Marie Riley for seniors, 55 years and over, 9:30-11:30 a.m. tomorrow, Windward Community College, Hale Kuhina 115; $9. 235-7433.

Women's Health Fair, celebrating National Women & Girls HIV/AIDS Awareness Day with health screenings, education on HIV, family planning, substance abuse and women's health issues, 10 a.m. tomorrow, Wai'anae Coast Comprehensive Health Center; free. 696-1505.

National Women & Girls HIV/AIDS Awareness Day, entertainment, guest speakers, HIV testing and counseling, 6-8 p.m. tomorrow, First Unitarian Church, 2500 Pali Hwy.; free with dinner included. 672-9050.

"Ask Dr. Bill," presentation by Dr. William Harris on his website VegSource and the benefits of a vegetarian diet, 7 p.m. Saturday, McCoy Pavilion, Ala Moana Beach Park; free, sponsored by the Vegetarian Society of Hawaii. 944-8344.

Qigong for Health, five-session class led by Walton Mew on using internal energy movement to improve external health, 8-9:30 a.m. Saturdays, March 11-April 8, Windward Community College, Hale Kuhina 112; $30. 235-7433.

"The Art of Breath Control for Health and Healing," two-session class led by Marie Riley on how efficient breathing improves health, 10 a.m.-noon Saturday and March 18, UH-Manoa Social Sciences 637; $39. 956-8400.

"The 5 Steps to Successful Change," five-week workshop on making changes to change behaviors such as smoking, drinking, overeating and other habits, sessions begin with a presentation by Richard "Shunya" Barton, 12:30-2 p.m. Sunday, Unity Wellness Center room 204, Unity Church at Diamond Head; free. For a complete schedule of classes, which continue through April 9,: www.unityhawaii.org, 735-7107, 722-3581.

"Hormone Therapy and Breast Cancer," talk by Dr. Jennifer Fu, 5:30-7 p.m. Monday, Hawai'i Kai Public Library; free, sponsored by the Susan G. Komen Breast Cancer Foundation. Registration: 754-1817.

Cancer Research Information Day, presentations and speakers on cancer related topics including cancer among children, the genetics of cancer and the rates of cancer in different ethnic groups, and discussion of plans for a new cancer research and treatment center for Hawai'i, 9 a.m.-3 p.m. Wednesday, Queen's Conference Center, Punchbowl and Beretania; free, sponsored by The Cancer Research Center of Hawai'i. 275-3020.

ONGOING

Open Meditation, learn how meditation can support well-being of mind, body and spirit, 9-11 a.m. Sundays, Kailua Shambhala Meditation Center; also, meditation for beginners, 6:30-8 p.m. Tuesdays and for all levels, 6:30-8 p.m. Thursdays, free. 262-8352, www.kscenter.org.

Butoh movement workshop, exercises to develop sensory and spatial awareness through dance and spoken word, 6:30-8:30 p.m. Sundays, Japanese Cultural Center, Kenshikan Dojo; $30 per month. 387-4861.

Luk Tung Kuen Movement Class, low-impact exercise incorporates 36 movements that improve circulation and unblock the body's pressure points, 8-9 a.m. Mondays, Fridays and Saturdays, Kahala Mall center court; free, no registration required.

Yoga Under the Palm Trees, join others in yoga practice, 8-9 a.m. Mondays, between the Waikiki Aquarium and the Natatorium; bring a mat or towel; donations accepted. 373-8833.

Stroller Strides, workout and play for mothers and outdoor activities for their babies in strollers, 8:45 a.m. Mondays and Fridays at Kapi'olani Park, and 8:45 a.m. and 5:15 p.m. Wednesdays at Magic Island; $10 per class (discount for multiple classes); ongoing classes also in Kailua and Waipi'o. 371-6904, 783-5701, www.strollerstrides.com.

Exercise class, led by Paul Bragg, 9-10:30 a.m. Mondays-Saturdays, Fort DeRussy Park; free.

"Rejuvenate!," adaptive yoga for seniors, with standing, seated and optional floor exercises, intermediate yoga, 10-11 a.m. Mondays; level 1 basic yoga, 10-11 Fridays, Pohai Nani, Kane'ohe; $3 per class. 247-6211.

Tai Chi For Arthritis, sponsored by Arthritis Foundation, 3-4 and 6-7 p.m. Mondays and Wednesdays, Tenrikyo Honolulu Ko, 349 N. Judd St. Call for class fees and registration: 596-2900.

Body Works Hawaii classes in low-impact aerobics, Pilates, Latin- and '50s-music workouts, and cardio kickboxing, 6-6:45 p.m. Mondays, Tuesdays and Thursdays, Kuhio School cafeteria; $1 per class. 735-5755, 377-5132.

Yang Tai Chi and Karate Classes, offered Mondays, Wednesdays and Thursdays, Higashi Hongwanji Mission; $38 per month with access to 25 classes. Call for registration packet: 220-4506.

Balance and Fall Awareness, balance testing and fall risk screening, Mondays-Fridays, the Balance Center of the Pacific, 600 Kapi'olani Blvd., Suite 404; free. For appointment: 955-8339.

Balance and fall prevention screenings, Mondays-Fridays, Ohana Pacific 593-2610; Kailua office: 262-1118; www.ohanapacificrehab.com.

Senior Safe Walk, mall-walk program for improved balance, breathing and joint protection, 7-8 a.m. Tuesdays and Thursdays, Kahala Mall; free. Register: 739-0140.

Aerobic Dance Class, by Anne Noyes, for all ages, 7:15-8:15 a.m. Tuesdays and Thursdays, Holy Nativity Community Center, 5286 Kalaniana'ole Highway; $4. 941-0390.

"Yoga is for Every Body," class in Kundalini and hatha yoga taught by Amber Ricci, 6-7:15 p.m. Tuesdays in Hawai'i Kai; $10 per class or $45 for five classes. Location and registration: 396-6715.

Aikido Classes, with the Aikido Ohana, children 3:30-5 p.m. and adults 5:15-6:15 p.m. Tuesdays and Fridays, Higashi Hongwanji Mission, 1685 'Alaneo St.; $20 per month for three classes per week, family and children's discounts available. 221-8656, www.aikidoohana.org.

Qi Gong Classes, improve health of the body and mind through exercise, meditation and teachings from ancient Chinese practices, sponsored by Falun Gong, 6:30 p.m. Tuesdays and Thursdays, Ala Wai Park, 480 University Ave.; free. 943-6664.

Luk Tung Kuen, participate in calisthenics with members of the Hawai'i branch of Luk Tung Kuen Worldwide Association, 8-9 a.m. Wednesdays, Hawai'i Kai Towne Center stage; free. 9521-3826.

Tai Chi For Arthritis, practice with instructor Janet Jin, sponsored by Arthritis Foundation, 8:30-10 a.m. Wednesdays and Fridays, Chinatown Cultural Plaza courtyard; $2 donation requested. 596-2900.

Introduction to Transcendental Meditation, learn how to reduce blood pressure and live with less stress, 1:30 and 7:30 p.m. Wednesdays. For registration and location: 947-2266, www.tm.org.

Masakatsu Ki-Aikido Dojo, instruction for children (5 and older) and adults, 8:30-10 a.m. and 7-9 p.m. Saturdays, 1007 Waimanu St., second floor; monthly fees are $15 children, $25 adults; discounts available for families. 487-6080.

Swim Classes, one-hour classes for beginning adult and intermediate adult swimmers, as well as those who are water-challenged, led by J.J. Kobelansky, beginners 9:30 a.m. Saturdays, intermediate 10:45 a.m Saturdays, bring towel or beach mat and goggles; $10 per class. Call each week to learn class location: 373-3839. Private lessons also available.

"Mindfulness Meditation," develop inner peace, emotional awareness and stability and reduce stress through insight meditation, 4 p.m. Saturdays, Broken Ridge Korean (Buddhist) Temple, Palolo Valley; free. 395-7749.

East West Qigong International holds qigong classes Mondays, Wednesdays, Saturdays, and Sundays at various times and locations. For schedule, costs and details: 941-9707, www.eastwestqigong.org.

"Baby Boot Camp," strength-training for moms with stroller-age babies, classes at Aloha Tower Marketplace, Kahala Mall, Central O'ahu Regional Park, Mililani and Kapolei; first class is free, subsequent classes $12 each, discounts available for longer commitments. Schedule and locations: 754-6169, www.baby bootcamp.com.

EyeCare America Seniors Eye Care Program, the Hawai'i Ophthalmological Society encourages those 65 and older to check their eligibility for free eye exams from volunteer doctors. Call (800) 222-3937 for eligibility requirements.

Castle Medical Center's Wellness Center offers a variety of fitness classes for $35 per month or $90 per quarter. Schedule: 263-5400, www.castlemed.org.

Fitness and Exercise Classes, various times and days, Kapi'olani Women's Center. Registration and schedule: 535-7000.

"Fit for a Goddess," women-only classes using a dance pole for increased strength and flexibility, ongoing at various times and days, in Kailua and Kaimuki; $15 introductory class, $140 for eight-week session. Complete schedule: www.fit4agod desshi.com, 262-6979.

Stott Pilates and Yoga Classes, mat and equipment training for all levels offered daily, Pilates Training Center of Hawaii, Kailua; $15-$23 per class with package discounts available. For schedule: 261-9519.

Chi-lel Qigong, open group practice with Ginny Walden of Blue Sky Healing Arts, 8-9 a.m. Thursdays, Kapahulu Center; $5. 944-8327.

Goddess Dance Bellydance and Yoga Fitness for Women, combination of belly dance, salsa and yoga with a Pilates cool-down, 5:30-7 p.m. Thursdays, Moiliili Community Center; $12 per class. 255-9839.

"Freedom From Pain," series of classes with Brett A. Sloan on how to reduce pain from inflammation and injury through nutrition, 6 p.m. Fridays, Airport Center Chiropractic Clinic; free. 834-8662.

Send announcements, with contact name and phone number, to: Health Calendar, Island Life, The Advertiser, P.O. Box 3110, Honolulu, HI 96802; islandlife @honoluluadvertiser.com, with "Health Cal" in the subject line; or fax 525-8055.