A 5-day, non-residential exercise and living course for children with asthma is described as a feature of a programme of outpatient physiotherapy. Eleven children undertaking such a course were compared with 10 asthmatic children in a control group. The subject group showed, in the short term at least, an improvement in bronchial lability, peak flow rates, nocturnal and daytime wheeze, and activity compared with the controls. These findings were statistically significant. There was no difference between the groups in the number of days on which extra medication was taken. A short, sharp course is of benefit physically, socially and psychologically to children with asthma.