12. History of, or known active cardiovascular disease including: (a) Previous myocardial infarction (heart attack); (b) angina pectoris; (c) congestive heart failure; (d) valvular heart disease including mitral valve prolapse; (e) cardiomyopathy; (f) pericarditis; (g) stroke or transient ischemic attack; (h) chest pain or shortness of breath with activity (such as walking up stairs); (i) peripheral vascular disease or risk equivalent; (j) other heart conditions under the care of a doctor;