squat

[speedkills]

When i squat i cant keep my feet flat on the floor. when im going down my heels always come off the ground as if i were doing calf raises. even when i try to squat with no weight this still happens. is there something wrong with my legs or am i doing something wrong?



http://www.exrx.net/WeightExercises/Quadriceps/BBSquat.html

look at how this guys feet stay flat on the floor the whole time ^^