From the Imperial War Museum archives.

Exercising with free weights or machines is definitely beneficial for promoting muscle growth, increasing bone mass, firing up the metabolism. and keeping the heart and lungs healthy. 

However, working out the body in ways specific to the sports and activities one engages in is superior to traditional weight training. 

By creatively emulating the movements needed to excel in a particular activity, like wrestling, an athlete can better prepare himself for the kinds of motion and muscle activity needed to perform well in his chosen sport.

Another awesome vintage wrestling instructional video.