Chest pain is a frequent complaint in the adolescent age group. Although rarely cardiovascular etiology. The most common reason for chest pain is due to musculoskeletal like costochondritis,or injury chest wall. And the other causes include asthma, pleuritic chest pain, and cardic origin(rare in children). Most of the people with chest pain simply want reassurance that symptoms are not cardiac in origin. A careful history and physical examination are more important. A normal chest x-ray and ECG can provide you some reassurance. Further cardiology consultation is rarely required but should be considered when experiencing chest pain with exercises. Keep in touch Hope my answer might be helpful Thank you