IIf a blood clot totally blocks the artery, the heart muscle becomes "starved" for oxygen. Within a short time, death of heart muscle cells occurs, causing permanent damage. This is a heart attack. After experiencing a heart attack, healing of the heart muscle begins soon, this takes about eight weeks. Taking care of yourself after a heart attack is a must, eating properly and less strenuous activites. If any persist contact your physician or call 911 imediately. To help with learning information of how to maintain your health with heart related issues contact the American Heart Association.