Hi all, I have HR data from a singular ride where I ride 1 hour with group C pace; at the rest stop half-way through the 2 hour ride; I switch to group B and ride the last hour with them. Looks like my HR sits below a 150 threshold with the C group, and then around 170+ with the B group. Should I be stick to riding longer / more with the C group before moving up to B group? Or, if I can hang onto B group is there any danger in sitting at 170-180BPM for a full 2 hour ride with lots of push? I need some advice on what makes sense to normalize riding with the B group over time and getting fitter.
