Re: High resting heart rate
Yes, I would be concerned, especially since you are experiencing severe dizziness with running. The most common reason for a fast resting heartrate is an overactive thyroid. I would see your Dr. and investigate the reason for your tachycardia. I would wait to start your exercise program until you have checked out your heart rate and the cause, if it can be found, is treated. You might need to see a cardiologist as well.