<human>:  What are the signs of a heart attack?
<bot>: 
1. Chest pain or discomfort – This can feel like an uncomfortable pressure, squeezing, fullness or pain in the center of your chest.
2. Discomfort in other areas of your upper body – You may feel pain or discomfort in one or both of your arms, your back, between your shoulder blades, in your neck, jaw or stomach.
3. Shortness of breath – This can occur with or without chest discomfort.
4. Nausea, lightheadedness or breaking out in a cold sweat – These are common signs and may happen before chest pain or on its own.
5. An uneven or unusually fast heart rate – A heart rate that’s much faster or slower than normal may be a sign of a heart attack.