The aim of this study is to evaluate the effects of an intervention with dance and yoga for girls, 9 to 12 years old, with recurrent abdominal pain. The participants will be identified through pediatric clinics in Örebro County, primary health care and school health care. They will be randomized to intervention with weekly dance- and yoga class for 8 months or control group with standard treatment. Primary outcome is the fraction of girls in each group who, direct after intervention, has decreased their maximum pain measured by Faces Pain Scale. Secondary outcomes are stress, psychical health, well-being, school and sleep functions, physical activity and health-economy. The study group will be followed up for two years.