I've been pushing myself really hard lately and seeing some great gains. I just want to see if you guys think I have good form. When squatting heavy (just hit a milestone 225x5 for me) on the way up, sometimes I feel like I'm using my lower back to lift. Afterwards my lower back gets sore. Is it normal that your lower back is being used when squatting? Also, my knees want to buckle inwards when going up but I always force them back out. I'm self concious about that because it may appear to someone watching that my wobbly legs can't handle the weight. Then again maybe I'm exaggerating. I always go ass-to-grass with the exception of the occasional cheating on the last rep. I have no spotter and I'd much rather cheat a few inches than kill myself. My feet stay pigeon-toed and a little wider than should width.