Markus A. Kassel

A black belt in Karate, ring-tested kickboxer who also holds a university degree in Psychology, I have to admit I know a thing or two about kicking butt and imposing my will on my foes. However, the real adversary I've always been looking to vanquish - whether in CrossFit competitions, in a race or a fight - has never been anyone else but me.

I believe in the Latin phrase mens sana in corpore sano and try to honor that spirit every chance I get by looking for new, more efficient ways to improve myself and reach the next level. Through my trials and errors, I've accumulated a vast wealth of knowledge. Not only on the quickest means to attain one's physical peak but also on what it takes to toughen up mentally and develop a sharp, indestructible mind.

In this series of books, I intend to share with you everything I've learned in close to 20 years of studying and perfecting my training. It is the next natural step for me: to put into words all that baggage made of sensations, hard-earned habits and unspoken truths; to extract its very essence without holding anything back. And by so doing, not only will I get better, you will as well!

Some of the facts I'll lay out will surprise you, others may come as a shock, but rest assured that they represent the fastest shortcut to success. So, if you're ready for the change of a lifetime, let's get started and discover the Superhero who had been hiding inside you all along!

Sincerely,

Markus