And when you exercise, certainly in HIIT, parts of your brain go to a lower usage, but at the same time there is a ton of blood going through the tissues, so th

And when you exercise, certainly in HIIT, parts of your brain go to a lower usage, but at the same time there is a ton of blood going through the tissues, so the cells probably get to recharge with all the extra blood and nutrient/energy transport going on. Plus when you're done with exercise, the entire metabolic engine keeps going for 30-60 minutes (or even more depending on how hard you go), which also gives the opportunity for brain cells to recharge.