I had an advantage there, (not that any wrestling I ever did was formal) but I worked on farms growing up. Great fun at college when everyone is sizing eachother up with a nice firm handshake. You wait until they are firmly convinced that the bean pole before them is no more threat than any other twig, and are giving your hand their winningest squeeze. Then just as the seratonin begins to rise you crush their metacarpals into powder. Alas it has now been a long time since I have done manual labor so the fun is over.