"<a href=""https://www.youtube.com/watch?v=hppbxV9C63g&amp;t=1h12m50s"">1:12:50</a> Stress.  HuberMan did a podcast a couple of weeks ago.  I believe Lex could recite the numbers backwards but he has stress aversion to having to juggle another thing in- so he quit.  Go do a study on indigenous learning 😂. Think of it like an expensed vacation!"