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Sorry to raise this again, it seems so many people ask the same questions so forgive me.
I understand the basic idea of RHR and MHR I think, and at my age the basic calculation works out at 157. (I'm 63)
Now I appreciate that it is much better to work out my real MHR except when i look at the websites talking about stress tests they seem to be full of dire warnings for those who are a little older. I have been running on a tread mill and can easily go over 140 (measured with a belt) which the machine doesn't like but I feel fine. I can keep running in the 140-150 range.
Can I assume that my MHR is higher than my average? Am I doing myself any harm if I let my heart stay at this?
Any observations would be welcome.