Will an increased size of the aMCC increase you will power and help it continue to grow like a muscle? Do you become more resilient the more it is trained?

Yes, increasing the size and activity of the anterior mid cingulate cortex (aMCC) through challenging tasks can indeed enhance your willpower and resilience, much like exercising a muscle. Andrew Huberman explains that engaging in activities that you find difficult or unpleasant can activate and increase the robustness of the aMCC. This brain region is associated with tenacity and willpower and can be strengthened by regularly performing challenging tasks that require significant mental or physical effort 1 2.

It's important to continuously push the boundary by adding new or more difficult challenges because maintaining the same level of activity won't continue to build your resilience or tenacity to a greater extent. Essentially, for growth to occur, the task needs to be something that you are not already accustomed to 1. As Jocko Willink discusses with Andrew Huberman, regularly doing things that are uncomfortable or challenging can build mental resilience and tenacity, just like physical exercises build muscles 3.