inaperfectworld
New Member
I see reference to this but can't find anything defining it. Presumably it is a % of max heart rate , but which percentages and - why don't you want to be in the red zone?
inaperfectworld said:did he mean he was going anaerobic?
inaperfectworld said:is it % of maximum heart rate? I was cycling in the Alps and came across a dutch lad who was struggling and going slowly. He said he had backed off because he was going into the red zone. did he mean he was going anaerobic?