-Stick to just MAF for ~28 weeks until a 100-mile Ultra run? Or add intensity/anaerobic work?
-Having trouble keeping HR in MAF/higher near end of long runs (20+ miles) – why?
-Muscular imbalances in hip external rotators highlighted by single-leg squats — how this can hinder performance and how to fix it
-Can’t race for a long time, but still want to train for MTB Ultras: Just stick to MAF or do intensity as well?
-Should you hike at MAF or is it ok to be below?
-Setting zones for someone with a high heart rate – ditch MAF?