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 thoracic spine (upper back) has a normal outward curvature that is medically referred to as kyphosis or the kyphotic curve by which the spine is bent forward. In this discussion, the term kyphosis will be used to discuss abnormal kyphosis. The spine is normally straight when looking from the front.