Your heart has its own age—and knowing it can be the key to cardio health, study finds

Technician leaning over a person getting an MRI (Credit: Getty Images)

You may have already heard that your biological age—the rate at which you are physically aging—may differ from your actual age, depending on how healthy you are. 

Now scientists have revealed your heart may have its own age, too—and they say that knowing it could be the key to being in top cardiovascular form.