Now that you've got the push-up under control, how about making it a little bit more challenging?
All you have to do is add a little decline to the push-up. Adding decline is a great way to target your upper body (chest) muscles more than just a regular push up and the best part is that you use your own body weight for resistance. Start easy with your feet on a low step or small bosu. Work your way up to putting your feet on something higher like a stacked step, a bench or even an exercise ball to really challenge yourself.
Fit's Tip: Do not compromise form. If you find that it is too challenging to put your feet on an incline and still keep good form, then work on building strength before trying this variation.