The Science of Breaking
A general topic for this, I suppose.
Came across the following and it seemed fascinating enough to share and expand upon.
Never could figure out how people broke really hard things WITHOUT breaking themselves before seeing this ...
Superhuman Strongman 3/5
http://www.youtube.com/watch?v=G8Q2p1yLKac&feature=g-vrec
(10 min 0 sec)