Rarely has a human come along with a barrel-like chest that captured more unbelievable depth than the chest that belonged to Mr. Universe, Reg Park. The side chest shot that belonged to Park was mind-blowing, and in fact huge enough to capture the imagination of a young Arnold Schwarzenegger, who developed a pretty decent side chest shot himself. If you have come to realize that your chest is not as large as you want, it is probably a great time to find an exercise that will cause your chest to explode with size from the inside out. Exercises like machine pullovers can begin a transformation in your chest structure that will seemingly erupt with an explosion of growth. Not only will machine pullovers challenge your chest structure, but the muscles packing over your back and chest will be forced to thicken and grow.