[Max Heart Rate does not decline with age.](http://www.howtobefit.com/determine-maximum-heart-rate.htm)
Sally Edwards has written about HR training for years
Curious that she claims it is unrelated to age, but then uses it in one of her own formulas.
This page details various different formulas for calculating MHR (which all take age into account in some form and references the research and studies that produced them) in an impartial way.
Curious that she claims it is unrelated to age, but then uses it in one of her own formulas.
This page details various different formulas for calculating MHR (which all take age into account in some form and references the research and studies that produced them) in an impartial way.