I know its next to impossible to evaluate anyone's form without a vid, but i thought i would post my problem anyway. I have recently been doing squats again, the first time since high school. I quit them in high school cuz i pulled a hamstring really bad and i was scared of getting hurt. Well anyways i been doin em again, and working out with really light weight until i get my form good. But even with no weight on my shoulders, i have trouble keeping my back perfectly straight, i always want to lean forward a little. Is this normal, or am i doin something wrong? Im not leaning forward to excess, but i am leaning.