Squats are often referred to as the King Shit of leg and ass exercises – they do not have a fancy name or take a lot to master – they are simple and basic but also are, what a lot of us in the fitness industry can attest to, the best exercise for building your lower body to where you want it. Along with looking FABULOUS, they also help to improve your balance and your bone density!
Once mastered this move is easy. That being said it does require you to focus because it can move from good to bad in seconds of losing your form, and can hence cause terrible injuries. Note that its best to get the technique and form mastered with light or no weight before adding heavy weights.
Here's a brief tutorial on how squats should be done. Just bend your knees and go down right? Wrong. Correct form can to wonders for those aching ankles and back.
Every flat belly needs a squat