<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi I am in police training this is my second time around the first time we was running an doing obstacle I finish then pasted out my chest was hurting an I couldnt breath today the same thing happen but I didnt pass out I just got dizzy an my ears was popping I went to the doctor they said I am fine Im really scared cause it hurt so bad can you help  <response>: Hello rearward welcome to Chat Doctor.come have gone through your concern in depth. This is due to over exertion beyond the cardio respiratory capacity of the individual person. Recommendations for the same-Maintain your HY Chat Doctor. - Gradually raise the level of the same to settle the body better way.- Decide the threshold level of the body at which point you have to withheld yourself. Hope this will help you. Regards. 