http://www.youtube.com/watch?v=g1WhKG8HWNA
The proper form: Squats. Choose your weight. Set the bar on a rack to just below shoulder level. Hold on to the bar using both arms at each side and lift it off the rack by first pushing with your legs and at the same time straightening your torso. Position your legs using a shoulder width medium stance with the toes slightly pointed out. Squat down until the angle between the upper leg and the calves become slightly less than 90 degrees. Begin to raise the bar as you exhale by pushing the floor with the heel of your foot as you straighten the legs again and go back to the starting position.
