Major symptoms prior to their heart attack include:-For Women: Unusual fatigue, Sleep disturbance, Shortness of breath, Indigestion, and Anxiety. Many women reported symptoms occurring a month before a heart attack.For Men: Shortness of breath, Weakness, Unusual fatigue, cold, sweat, and Dizziness.You can stay healthy and prevent the heart attack by exercise, healthy diet, regularly check blood pressure, cholesterol, and glucose levels, and stop smoking!