In 1944 alone, the United States built more planes than the Japanese did from 1939 to 1945. By the end of the war, more than half of all industrial production in the world would take place in the United States. Wartime production boomed as citizens flocked to meet the demand for labor.
Cardio Equipment. Building your butt muscles does not have to be restricted to the weight equipment. Use cardio machines for this purpose, particularly those that that incorporate some type of resistance or incline. Stair climbers, for example, are a great way to get in cardio and focus on strengthening your glutes.
Chi Machines. As with whole body vibration, these machines shake the body from the ankles up. The big difference is that the moving and shaking goes on while you're lying down. How It Works: You lie on the floor (or a treatment table) and place your ankles on top of a small square box that basically vibrates your body from the feet up.