Fifty-five years old and my resting heart rate this morning was 52 BPM. I have been working out consistently since Feb 2, 2016. I had to stop for three months because of surgery, but because I was in such good cardio-shape, it was not difficult to do 5Ks right away on my stationary after the three months of doing nothing. I've about 15 pounds to lose and I'm feeling great and on my way! ?