My younger sisters ejection fraction was 13. The cardiologist at the hospital put her on meds and exercise to increase. She has been going to the hospital for 15 months every Monday and Friday exercising with other heart patients. Her ejection fraction got upto 35
In June 2025 she fell ill with a flu virus and was hospitalised it was during her stay that they decided to add a pacemaker, defib, synchronizer and her ejection Fraction is now 55 back to normal. She's just joined local gym. To answer your question yes you can. Good luck.