I squatted for the first time in a month today. I keep the hard arch in my back to keep my lumbar spine neutral. Now, after my workout, I'm feeling really tight in my mid-back. I can't really tell this early if I'm going to get sore or not. Could the tightness be a sign of bad form? Maybe too much arch in my spine? Or does my body just have to get use to squatting again?
It's going to take some time to get back into it. Don't overdo it - give your body the time it needs to work out the kinks.
Plus yes just squatting will hit the low back you can expect it to be worked. There was no pain or discomfort during?? have someone who knows what there doing watch you or throw up a video