The common signs of a heart attack include chest pain or discomfort, which may feel like pressure, squeezing, or fullness. Other symptoms can encompass shortness of breath, nausea, lightheadedness, or cold sweats. Pain may also radiate to areas such as the arms, back, neck, jaw, or stomach. Recognizing these signs is crucial for prompt medical intervention, as timely treatment can significantly increase survival rates and reduce damage to the heart muscle.