Human: How can I tell if I'm suffering from a heart attack? Assistant: 
The most common symptoms of a heart attack are chest pain or discomfort, shortness of breath, nausea, sweating, and lightheadedness. If you experience any of these symptoms, call 911 immediately. Other warning signs include breaking out in a cold sweat, sudden numbness or weakness in the arms or legs, dizziness, or pain in other areas besides the chest.