This staple exercise is a good way to start building stronger legs, especially in the quadriceps.

To really get full value go all the way down into a low squat with your butt against your heels.  Many people have trouble going this low at first.  The most common limitation is ankle dorsiflexion also known as bending your ankle forward.  A way to test if this is what is limiting you is to stand with your heels slighly elevated and see if that helps you go lower.

calisthenics

Does this sound like something you would like to do? Well, you have to login first so you can add it to your goals and we can help you become the kind of awesome person that could learn to do things like this. It's a free account, you can even login using Google or Facebook so you have one less password to remember. Just look at the menu in the upper left and click on where it says howdy stranger.

After you do the "Add to Goals" button below won't be greyed out anymore.