Today's guest, Barbara Tversky, has spent her professional life questioning the primacy of the mind over the body.

Her incredible book, Mind in Motion, argues that our abilities to think and perceive originate in our bodies. And more specifically, in the process of movement and feedback from the environment.

Which means that physical activity is far from optional exercise. Moving our bodies in multiple ways, frequently, is the core of who we are as homo sapiens.

If you want to grow and evolve, books and philosophies are fine, but challenging your physical body with new situations and challenges is a far more powerful engine of evolution.