According to the survey, unusual fatigue is the most prominent early warning sign, targeting 71 percent of the participants who survived a heart attack.

Feeling of fatigue includes excessive exhaustion, a lack of physical and mental motivation, and extreme tiredness. Simple daily tasks like taking a bath or cleaning your room may suddenly seem laborious.

This fatigue could be happening due to the extra stress put on your heart. If the blood flow is blocked, your heart is trying to pump harder, leaving you fatigued.