title: Exercise as protection against heart attack.
mesh_terms: D002784:Cholesterol / Q000097:blood; D005342:Fibrinolysis; D006801:Humans; D008075:Lipoproteins, HDL / Q000097:blood; D009203:Myocardial Infarction / Q000517:prevention & control*; D010806:Physical Education and Training; D005082:Physical Exertion; D010809:Physical Fitness; D013927:Thrombosis / Q000503:physiopathology
chemical_list: D008075:Lipoproteins, HDL; D002784:Cholesterol