A push-up not only helps you to get a stronger upper body, but also a stronger midsection. It incorporates the stabilization muscles of your core, combining an upper-body pushing movement with a plank. It is, in fact, one of the best and most basic exercises for your midsection.
According to The Post Game:
"Push-ups are a higher value plank. You're not only strengthening your abdominals by holding them still while gravity's trying to push your hips towards the ground, but you're also strengthening your upper-body pushing muscles: your chest, shoulders and triceps."
Take a look at the video above to learn how to do the perfect push-up.