"The Ins and Outs of Cancer," discussion of the latest developments in cancer prevention and treatment with a focus on the gastro-intestinal system with talks by Warren Ono and Alvin K. Ikeda, 8 a.m.-3 p.m. tomorrow, Kuakini Health System's Hale Pulama Mau auditorium; late registration (free for patients, caregivers, students and clergy) available by calling 547-9562.

"Imagery and Prayer to Support Your Inner Healer," talk by Jeanne Achterberg on her personal experience and professional experience in mind/body healing, 9 a.m.-noon and 2-5 p.m. Saturday, UH-Manoa Spalding auditorium; $5. 941-8253.

East West Qigong International holds an introductory seminar on the ancient Chinese system of self-healing, noon-1:30 p.m. Sunday, Kaimuki-Wai'alae YMCA; free. 941-9707, www.eastwestqigong.org.

"Living Healthy Through Keen Observation," workshop by Jaime Boyd, 12:30-1:30 p.m. April 20, Windward Community College; free, part of the Lunch Alive Brown Bag Learning series. 236-9146.

ONGOING

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. For class fees and registration: 596-2900.

Group exercise, Greg Juliano leads in the use of light free-weights and resistance bands to provide a total body workout, 5:30-6:30 p.m. Mondays and Fridays, Farrington High School cafeteria; free, bring your own equipment. 544-4858.

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. Registration: 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.

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.

Morning Rhythm Meditation, claps and voices with step rhythms bring relaxation and energy, 7:30-8:30 a.m. Tuesdays, Manoa Dance Studio at Manoa Marketplace; sliding scale $5-$15. 521-3746.

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. 521-3826.

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.

Salsa for Adult Beginners, Alberto Archilla teaches an exercise class with a Latin dance beat, 5:30-6:30 p.m. Wednesdays, through May 24, Farrington High School cafeteria; free. 554-4858.

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