Originally Posted by
Ratfish
Well, that may be true, but I guarantee that if you never road a bike, you would have a RHR in the 60s right now.
Maybe, but that's why I said "necessarily". It is affected somewhat by fitness but I believe as a side-effect rather than a primary relationship. Somebody who is overweight and completely out of shape will likely have a higher resting HR because of their metabolic demands, not necessarily their lack of conditioning. Mine was pretty low before I really got into cycling; some people have naturally low HRs, and I was never really "out of shape" even though I was not particularly active growing up.