Taleb is making a big mistake interpreting this paper. This paper doesn’t test zone 1-2 vs. 3-5 or easy vs. intense exercise. It defines vigorous exercise as equivalent to jogging at 15 minute mile pace… For the uninitiated, you can walk at that pace… The actual findings of the paper: any type of exercise, be it easy or hard is more efficient than a slow walk, at providing health benefits. Great. No brainer. But it says nothing about whether a slow jog is better or worse than some hard intervals. It doesn’t test this. Even though folks are quick to try to say it does. All it says is: what nearly everyone would define as exercising is better than causal movement. I’ve seen several other folks get this wrong. It’s why definitions are so important here. Because the non-expert sees “vigorous” and assumes it’s hard exercise. When in this study it is literally a walk in the park… It’s a fine study. But it backs up zero of the claims that are being attached to it on social media.