I'm coming back from a badly strained lower back and want to make sure my form is tight. The DL was 315x1, I tried to do another single about 5 minutes later but failed as soon as I broke the floor because my back started to hurt in the same spot I injured it. Also looks like my lower back was rounded in the DL. The Squat is just 135x5, want to see if you have any pointers since it's obvious my heels are coming off the ground, I'm not sure if that's because of the light weight but I didn't film any heavier sets. Also this was my first weighted warm-up set so I don't really start hitting "depth" until the 4th/5th rep. Thanks in advance for any tips.