HIIT and Zone 2 training promote skeletal muscle adaptations including mitochondrial biogenesis, fat oxidation, and mitophagy.

“there's not a lot of direct human research on the effects of different training types of EX of of different training types of um different exercise training on mitophagy but I know of at least one human study that has found particularly vigorous intensity aerobic exercise enhances markers of mitophagy it's likely that both both vigorous exercise high-intensity interval training and more moderate exercise training can stimulate this process with hit just getting you faster and you know the moderate intensity Zone to requiring a larger training B volume”