Unfortunately, many people avoid doing push-ups since this exercise is a bit harder to perform, but it can do wonders for your body. There are plenty of different push-ups that work the different muscles in the shoulders and arms. Try to vary your push-up style to lower your risk of becoming bored with exercise. Not only do push-ups work the upper body, but also work the core. Do push-ups a few days a week to help sculpt the arms and overall transform the body. Plus, push-ups are good for your heart and cardiovascular health and this exercise helps to improve your posture. Just make sure you do them correctly – learn to do push-ups with your back straight to reduce back pain and avoid straining your back.