Support your weight on your hands and the balls of your feet. Your legs should be together and your arms bent 90 degrees at the elbow with your hands right below your chest. Do not bend in your midsection--your body should be straight. Straighten your elbows to push your upper-body into the air. Then bend at the elbows again to lower back down.

Vary your arm widths. By alternating your hand placement between closer or farther appart you will be able to work a larger range of muscle fibers on your pecs. Closer grips will work the inner pecs and will also put more stress on the triceps, while a wider stance will work the outer parts of the pecs.