Push-ups are so difficult! I consider them a big fitness obstacle to master. Once you are able to perform them correctly, they are the total body exercise–chest, triceps, upper back, core…But often times, in order to keep up in a class or as a result of doing them on your own and having no one correct you, there may be many elements that are falling short of proper form. I hope this video will help you. It will show you how to push-up from both your modified knee position and the advanced toe position.