This is pretty interesting. The idea of not attempt to "command" the body but work with the body and unconscious process is common in a wide variety of martial arts and healing art modalities (Alexander Technique, Qigong, hypnosis, etc).
2) "When your amygdala is active, you can’t have empathy for others"
Unfortunately, this statement seems to suffer from the weakness of popular psychology expositions - a series of fairly pat cause-and-effect statement when the causes of virtually all behavior is more complex and much less certain.
The human brain is fantastically complex thing. Neurologists and psychologists have done many experiments on it. The "replication crisis" is a good indicator how difficult is to go from experiments on a few particulars to a general understanding of how the brain works. I think the criticism of "functional areas" that Luria made in The Working Brain should be read carefully.
The thing about this is: neurological research is great to add if what you're looking for is "what might be", using methods that possibly have scientific and seem effective. But if you operate in terms of "how things absolutely are", then one risks going into the realm of pseudo-science. And there's a lot of supposedly neurologically based new age quackery out there - much of it based things that "the latest findings" whenever said quack happened to get their start.