There are some parts of this that resonate with me... but other parts seem a little crazy. Many extremely fit people have regular workout regimens. He mentions

There are some parts of this that resonate with me... but other parts seem a little crazy. Many extremely fit people have regular workout regimens. He mentions basketball players... I'm pretty sure they practice on a set schedule, not randomly when they feel like it. And while goals can be bad if you don't reach them, they can also be really good, giving you something to strive for. They also let you know you are improving... Just because cavemen didn't have heart monitors, doesn't mean they don't have value. This seems like a caveman fetish more than real science, though parts of it (like High Intensity training) are valuable.