Cold weather, sudden exertion create perfect storm for heart attack

Cold weather and sudden exertion pose a significant risk of heart attacks, especially for individuals with pre-existing heart conditions or risk factors. The combination of cold weather and sudden exertion increases the workload on the heart, constricts blood vessels, and increases blood viscosity. Engaging in strenuous physical activity raises heart rate and blood pressure, reducing oxygen supply. These effects can trigger a heart attack, particularly in individuals with underlying cardiovascular vulnerabilities.