Is the goal of aerobic training to become faster at the same AeT HR, to raise the AeT HR, or both?
I see some elite runners doing mountain runs with HR between 130-140.
After four months of shifting my training to ~3/4 Z2 workouts, I have seen my AeT rise from 145 to 151. My speed at 145 is the same, which surprised me. I have noticed other improvements like being able to do hilly neighborhood runs at Z2 (previously I’d spike to Z3) and my Z3 and Z4 mountain efforts are quicker.
