I am assuming that to train aerobic base I must keep HR under AeT. I ask as on long runs, over half marathon, HR drift means I creep up above zone 2. Does this mean long runs at a super easy pace are not benefiting my aerobic base as HR is higher? Basically, can aerobic base be trained when the pace remains very easy but the HR is higher than zone 2?
Thanks for all the content you guys are putting out as it’s seriously helped me focus my training.