Early Heart Attack Symptoms: When the blood supply to our heart gets interrupted or stops, then in this condition heart attack occurs. Many people lose their lives immediately due to heart attack, whereas getting treatment at the right time can save their lives. According to cardiologists, heart attack does not come suddenly, rather the body gives some warning signals before that. Ignoring symptoms like chest pain, shortness of breath, excessive sweating, fatigue and restlessness can be dangerous. If these signs are identified and treated in time, heart attack can be avoided.