Push up is an exercise that affects overall body.It strongly affects the upper part.The area which are most effected includes chest,back and shoulder.Its also effects your arms(triceps and biceps) .It is an exercise that gives strength and helps in burning calories. By continuously doing this exercise the overall shape of your body improves and you look better than before.
One of the great things is that they build muscle to support your core, and core strength supports your posture and overall mechanics. They also burn calories! You can check here to see how many calories push ups burn specifically for you, based on your weight: http://www.gbhealthwatch.com/BMI_calculator.php.
Not only can push up exercise your muscles of arms and chest, but it also strengthen you abdomen and back muscles. There are some benefits of doing push up, like making you more handsome and attractive to girls. Everyday I do about 100 push ups, of course, not in one time. Now I can do 50 push ups one time. I feel my muscles are stronger and bigger than before.