what heart rate
I know there is a "spot" that one is to try to sustain, something like over 100bpm for 20 min or something like that when exercising. Since the docs have told me not to lift, and the knees dont do calisthenics well, I invested in a decent treadmill. In the summer I can just walk, but in the winter rain?? Nope. I have found that about 3.1mph at a 3% grade will hold the bpm at 104-110 for 30 min and doesnt seem to mess with the knees. I tried to take the incline up, but I am feeling it in the left knee today.
Every day you see it on the news. Another felons life needlessly spared by inaccurate fire.