Please choose the correct ending to complete the given sentence: Health: [header] How to recognize heart disease symptoms [title] Do not ignore the chest pain (angina). [step] This is the most common heart disease symptom and one that is more commonly found in men. Such chest pain usually occurs when the heart muscle isn't getting as much oxygen-rich blood as it needs.

Ending1: It usually feels like pressure, pain, or burning in the chest. It can sometimes be confused with heartburn or indigestion. Ending2: This abdominal pain is caused by, but more than anything, angina. It can seem more intense at its foundation and become more frequent and sometimes even permanent. Ending3: To look for this symptom, inhale through your nose. Hold your breath there for a few minutes and then exhale through your mouth. Ending4: Angina, the absence of normal white blood cells in the blood, causes it to clog up the veins. This leads to a pinched feeling that may be caused by underlying illnesses.

Answer format: ending1/ending2/ending3/ending4