Originally Posted by
lenA
I need to dig a little deeper whether or not I let this stuff influence my fitness approach
If you want to use HR in your training, you can figure out your actual zones by doing a field test. Joe Friel's Training Bible, or one of Chris Carmichael's books explain how.
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You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.