I don't know why box breathing always gets credited as a Navy SEAL invention. This is a centuries-old technique and the SEALs got this from yoga/pranayama.
If Tim says X works, how many Silicon Valley types suddenly start doing it?
In fact, given that former Navy SEAL Jocko Wilnick is all the rage in the business world and Tim Ferriss is also followed by the same crowd, the crossover between those two groups is probably larger than you think.
And cronopios is right:
Me either, its like two annoying memes are trying to breed a memeplex together.