ge. Before resuming full activity or work, several weeks are needed for the area of the heart attack to heal. After a small heart attack, which is measured by the size of heart muscle damage, patients can resume normal activities after two weeks. These activities include returning to work as well as normal sexual activity. A moderate heart attack requires limited, gradually increasing activity for four weeks, while a large heart attack results in a six week recovery period. These time frames are necessary for the dead heart muscle to substantially complete the scarring process. During this healing period, patients should avoid vigorous exertion and heavy lifting (over 20 pounds) or any activity that causes shortness of breath or sweating. ...