How to Calculate Max Heart Rate (and Use It to Get Fit)

[@moomoomayhem7527]

I've hit 203 after a long run and a hard dash at the end.

[@georgeabraham5672]

Very useful

[@RambleStorm]

I wonder , is it possible to assume could one use ketone strips to test if you've you've been training in zone 2 and extrapolate from that?

[@jean-paullanglois5452]

Why dont you talk about Karvonen,BTW i don't see how you figure your maximum heart rate at 255 ,that's weird !?!

[@mohdjamaludinmohdjais8063]

Which should I calculate 180 - age or 220 - age??

[@jevgenijsalunin9820]

none of these are accurate

[@JJBpilot]

Look up Heart Rate Reserve method. Need your max and resting heartrate (at night, over several days). Newer Garmins will calculate zones based on HRR.