People of all ages are increasingly at risk, and without timely first aid or medical care, the consequences can be fatal. Knowing how to act if you experience a heart attack alone could save your life. Here’s what you should do, according to expert guidance from TheHeartHealthSite..2 / 6 If you suffer a heart attack while alone, immediately call emergency services. ADVERTISEMENT3 / 6 Doctors recommend taking an aspirin tablet during a heart attack—if you have no allergy—to help thin the blood and improve flow to the heart. 4 / 6 Stress and anxiety can worsen a heart attack by increasing heart rate and blood pressure.