Seven dan on picture (not exactly uniformly distributed though) Just compare his stance with mine, and you will see how great the space is for development.
Tools we use in order to achieve Real Ultimate Power. The blue tin can is filled with concrete, and was said to be used by Fujimoto sensei to strengthen his fingertips (nukite). I have never seen this, I think he practices shuto techniques with it (edge of hand), nukite sounds way too difficult.
Your brain is pumped with adrenaline, you perceive the world in slow motion, processing every single piece of detail that might be relevant for you to survive, and rejecting everything that's not. Tunnel vision.
Your body acts on its own accord: the result of decades of tedious training with nothing but blood, sweat and tears, during which the techniques burn into your muscles' memory. Subconsciousness.