The symptoms of a heart attack can vary from person to person, but some common signs include: 1. Chest pain or discomfort: This is often described as a feeling of pressure, tightness, or squeezing in the chest. It may last for a few minutes or come and go. 2. Pain or discomfort in other parts of the upper body: This can include pain or discomfort in the arms (typically the left arm), back, neck, jaw, or stomach. 3. Shortness of breath: This may occur with or without chest pain. It can be sudden and severe or develop gradually over time. 4. Nausea or vomiting: Some people may experience feelings of indigestion or gastrointestinal distress, which can be mistaken for other conditions. 5. Sweating: Profuse sweating, often accompanied by cold, clammy skin, can occur during a heart attack. 6. Lightheadedness or dizziness: Feeling faint or lightheaded, or experiencing sudden dizziness, can be a symptom of a heart attack. 7. Fatigue: Unusual or extreme tiredness, weakness, or a feeling of exhaustion may be present. such patients usually find it unable to walk even for few steps during these times. so if you are able to walk during chest discomfort - it may be some other cause for heart problem. It is important to note that not everyone experiences the same symptoms, and some people may not have any symptoms at all (known as a silent heart attack). If you or someone else is experiencing any of these symptoms, it is crucial to seek immediate medical attention as heart attacks can be life-threatening.