I am 49, male and in pretty good shape. I know my max HR is supposed to be 171 but I often train at higher rates. My recovery HR, according to my Garmin Instinct, is about 70 beats (drop) in 90 seconds, provided I sit still. But people tell me this is bad (the high HR, not the recovery). Yet although riding up a hill with an HR at 180 is hardly easy, I can get it done. If anybody needs to see my HR data I can add them on Strava. Sorry to waffle on, my question is, should I be keeping my HR below 171 at all times or should I just train within what my body tells me I can do?