As for the high blood pressure, I would suggest consulting your primary care physician for appropriate medications that would help lower the blood pressure without reducing the heart rate and appropriate lifestyle changes.
Take care!
Hi there!
The electronic devices used at the gym to measure the peak heart rate may not be very accurate. If you have always maintained a basal heart rate of 45/min without any symptoms and have had this evaluated by a doctor to be considered fine, it should not be anything to worry about. I would suggest taking a manual reading of the pulse rate during the exercise sessions and repeating this after 5 minutes of stopping the exercise. If the recovery is good, this should not be anything to worry about; though if the pulse rate crosses 180/min during exercise, on manual reading; you may consider an evaluation by a cardiologist to look for secondary causes.
Hope this helps.
Take care!