I am a 59 year old weighing 11 stone who has done no exercise at all for 20 years at least but is in good general health. Just taken up training and have bought a heart rate monitor. I am training at around 80% of a calculated maximum rate rate of 161 based on 220-age. My resting heart rate is about 60 bpm.
My concern is that I jogged gently back to my car 100 yards from the gym at the end of 40 minutes exercise and my heart rate was 161 although this dropped back to 105 or so within a couple of minutes. Obviously I would have increased this significantly if I had run harder as I was not distressed in any way. Am I superfit or about to die??!!