i've injured my back whilst squatting, bad form was clearly the issue for this. it happened about 2 weeks ago and since then i've not done any squatting. i'm trying to apply heat regularly although it's not healing my back! the muscle thats injured is just to the left of my spine right in the middle (top to bottom) of my back. the muscle feels hard and knotted. putting my chin to my chest with a straight back pulls on the muscle. as i'm sure that back injuries are fairly common with lifting, anyone got any tips to help?