[89911]

Along with the topic of heart rates, do any of you that run consistently agree with the maximum heart rate charts? I'm 46 and just got done running 4 miles on my treadmill. My heart rate barely reached 170bpm until the end. I averaged 10:00min miles. I felt fine the whole time and could or run at least another mile or so. I think my maximum rate according to the charts is something like 145bpms. At that pace I feel like I am getting absolutely nothing out of the workout and could do that for at least an hour or two. Are these guideline drawn out for the entire population including those that have very little exercise? My resting heart rate is about 55bpm. One sympton I had with a low resting hearbeat is that I occasionally would get an ectopic heart beat.