Why it can be so hard to do the one thing that helps reduce disease burden, mental health and energy

https://www.wsj.com/articles/a-caveman-would-never-do-crossfit-why-theres-nothing-natural-about-exercise-11609171200?fbclid=IwAR0Fc2Jpw09iUb3EGZN0b1S1gqdQ_MbHOH8cMk2nU6RKtzcOXTx6TVOReBw