And boy, do these videos teach you to focus. After you've followed this workout for a week you'll see muscles springing up all over the place. Your shoulders and chest will be stronger and your spine will be more flexible. They work your legs, your hips, your back as well as your chest, shoulders and arms. And when you add the variety, doing them from all directions and angles, pushups hit your fingers, wrists, triceps, upper back and abs.
Pushups are simply awesome.
When you see this video, you'll never want to skip doing them. This is not good advice for a combat athlete or for a regular person. When you lift groceries, move furniture or do something physical at home or at work, you don't isolate muscles. You use your entire body. It's the same for a combat athlete as well.