You may have heard your car has a four-stroke engine, but you're not sure what that means. Why are there four? And what is a stroke, anyway? A modern gas engine most commonly uses pistons and a ...
Verywell Health on MSN
Stroke vs. Heart Attack: How to Tell the Difference
Stroke and heart attack are life-threatening conditions that require emergency medical attention, but they differ in the affected organ and symptoms.
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