Exercising four hours per week can increase neurogenesis, including growth of new brain cells and the hippocampus.

“and the way to get it to the brain is through exercise like that's that's that's known and it's been shown again in human studies as well”

“this study was published in pnas and it found that humans that exercised four hours a week increased neurogenesis that's the growth of new brain cells not only that we're able to increase the size of their hippocampus so that's the part of your brain involved in learning and memory”

“did you know that exercising just four times a week actually four hours a week can increase neurogenesis that is the growth of new brain cells actually it can even increase the hippocampus that's the part of your brain that's involved in learning in memory”

“what's clear is that exercise increases the ability of igf-1 to cross the bloodb brain barrier once in the brain igf-1 plays a crucial role in promoting neurogenesis that's the growth of new brain cells especially in regions of the brain like the hypoc campus which is important for learning and memory”