Injuries dont heal

[Charlie Davies]

Unfortunately I cant distinguish between low back pain and a pump. I also cant distinguish between doms and low back pain.
However I shouldnt get a back pump from deadlifting 135 for 1 rep, when I can do 400 lbs+. I also shouldnt get doms that last multiple weeks from doing a couple singles at 135, when I'm an intermediate deadlifter.
Hell the same happens when I do romanian Dls with the empty bar.

I can make my back hurt for days by flexing my lumbar spine in a bodyweight squat. Or when I do crunches, the hanging toes-to-bar exercise or otherwise flex my spine sharply.
But I can squat and deadlift w/o hurting my spine at all, when I maintain extension.

But, my back is not yours. I assume you've taken video and are confident you are not flexing your back when lifting?

[zar9star]

I can make my back hurt for days by flexing my lumbar spine in a bodyweight squat. Or when I do crunches, the hanging toes-to-bar exercise or otherwise flex my spine sharply.
But I can squat and deadlift w/o hurting my spine at all, when I maintain extension.

But, my back is not yours. I assume you've taken video and are confident you are not flexing your back when lifting?

My form is good. I film myself regularly.