The us epa issues a daily report for pollution levels called

the ecg findings of an acute anterior myocardial infarction wall include: st segment elevation in the anterior leads (v3 and v4) at the j point and sometimes in the septal or lateral leads, depending on the extent of the mi. this st segment elevation is concave downward and frequently overwhelms the t wave.

explanation:

take a break move to stretching and slowly work back into physically exercising if the problem continues go to a doctor or physical therapist