Originally Posted by firstname.lastname@example.org
Since when is this so terrible? "I have swayback...and??" A lordotic arch is normal and if you look at the current exercises, what is said? Keep a neutral posture and/or a lordotic arch to do the exercise correctly. The only time it's not normal is if you are an overhead painter or sheetrocker, then you need more lumbar flexion.
since we recognized said lordosis as excessive... the lordotic arch is normal and optimal. but once outside that normal amount of curvature, in either direction, it's no longer optimal and can cause serious and permanent problems from the uneven pressure placed on the vertebrae and disks in this position under loading.