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Ejection fraction can improve in some people on proper medical therapy. While exercise doesn't result in the significant improvement in heart function (in most studies) that we'd hope for, it can improve quality of life and functional capacity. I'd talk with the cardiologist about an exercise prescription and whether cardiac rehabilitation could be a possibility.
What is a Healthy Ejection Fraction? In a healthy heart, each beat should pump out at least 50 percent of the blood in the left ventricle. Therefore, your EF should be between 50 to 75 percent to indicate the heart is pumping well and able to deliver an adequate supply of blood to the body and brain.