Physical exercise can induce an acute attack in most asthmatics. Exercise-induced asthma (EIA) is therefore a common clinical presentation of bronchial asthma. EIA is likely a consequence of bronchial hyperreactivity whereby alterations in bronchial osmolarity, heat-loss by hyperventilation and physical activity per se are discussed as pathogenic triggers. Clinical presentation, pathogenesis and diagnosis of exercise-induced asthma are summarized. Pharmacologic and non-pharmacologic possibilities are covered in some depth. In this context the value of sports-therapy in treatment of asthma is redefined. The possibilities and limitations for this form of treatment are explained.