Sally uses a "better" formula in the other book that Koffee mentioned. That's the book I have. Good read.
Just curious, what HRM did you get?
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The Lord is merciful and gracious, slow to anger and abounding in steadfast love. - Psalm 103:8
I am a cyclist. I am not the fastest or the fittest. But I will get to where I'm going with a smile on my face.