Originally Posted by
Strong Bad
But the truth is that, for most people, most of the time, they are riding at a heart rate lower than the heart rate they would be at running.
Very true. For a roadie who can take to the road and hammer, sure, you can get your HR up and burn some calories. But if you use the general population's definition of cycling, i.e. 10mph on a MUP, the HR is about the same as for a casual walk up a hill.