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Hi joe - I'm enjoying reading version 5, but I was curious about why you and Coggan differ on the definition of zone2/3 For heart rate? Your bresknpojnt is 89% FTHR whereas his is 83%. Any insight would be appreciated thx Tom Robinson Thom2544@gmail.com
Toggle Commented Nov 13, 2018 on The "All New" Cyclist's Training Bible at Joe Friel
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Nov 12, 2018