We cannot equate this with a purely biological freedom or vitality, or spontaneity. Bergson and His Philosophy J. Alexander Gunn. It is a more serious difficulty that Paul knows of no Longobardic king with a name which we can equate with Sceaf.
But this posture makes your pelvis rock forward into an anterior pelvic tilt, which consequently creates an increased lumbar curve (lordosis). Unfortunately, other tissues such as the muscles described above adapt to this posture over time, which contributes to back pain and injury.
The problem with sitting in a posterior pelvic tilt is the liquid is pushed back into the disc. Essentially, being in a bad position for weeks and months at end can put your body at risk. Eventually, it is possible this inner layer can escape the outer layer.