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.
Lack of exercise leads to the following conditions that may threaten the back: 1  Muscle inflexibility can restrict the back's ability to move, rotate, and bend. 2  Weak stomach muscles can increase the strain on the back and can cause an abnormal tilt of the pelvis (hip bones).